Alarm Check Valves

Alarm Check Valves Market Outlook

The global alarm check valves market is projected to reach approximately $1.5 billion by 2035, growing at a compound annual growth rate (CAGR) of around 5.8% from 2025 to 2035. This growth can be attributed to the rising emphasis on fire safety regulations across various sectors, along with the increasing installation of advanced fire protection systems in both new and existing buildings. With the expanding urbanization and the growth of industrial and commercial sectors, there is an escalating demand for reliable safety mechanisms that can mitigate fire risks effectively. The surge in investment towards infrastructural development in emerging economies further bolsters the market, presenting significant opportunities for manufacturers and service providers to innovate and expand their product lines. Additionally, technological advancements in valve manufacturing, aimed at improving performance, reliability, and efficiency, are anticipated to play a crucial role in shaping the market dynamics.

Growth Factor of the Market

The growth of the alarm check valves market is significantly influenced by several interlinked factors, chief among them being the stringent regulatory frameworks mandating fire safety in commercial and residential properties. Governments worldwide have been actively introducing and enforcing codes that necessitate the installation of effective fire protection systems, thus driving the demand for alarm check valves. Furthermore, as natural disasters become increasingly frequent, there is a heightened awareness about the importance of fire safety measures, prompting property owners to invest in reliable safety systems. The expanding construction industry, particularly in developing regions, is also a substantial driver for the market, as new buildings are often equipped with modern fire safety systems. Additionally, the technological advancements in fire detection and suppression systems, such as the integration of smart technologies and IoT, are enhancing the functionality and efficiency of alarm check valves, making them more appealing to end-users. Lastly, the growing trend of retrofitting older buildings with modern safety features is further amplifying the demand for alarm check valves.

Key Highlights of the Market

• The alarm check valves market is projected to grow at a CAGR of 5.8% from 2025 to 2035.
• Stringent fire safety regulations are driving the demand for alarm check valves across multiple sectors.
• Technological innovations are enhancing the efficiency and reliability of alarm check valves.
• Investment in infrastructure development in emerging economies is contributing to market growth.
• The trend of retrofitting older buildings with modern safety systems is boosting demand.

By Product Type

Dry Alarm Check Valves:

Dry alarm check valves are primarily designed for systems where water is not present in the piping system until a fire alarm is activated. These valves are crucial in preventing water from flowing into the system, reducing the risk of accidental discharge. Their design enables the detection of flow, which activates the alarm, signaling that water is needed in the system. The increasing adoption of these valves in facilities where freezing is a risk, such as in colder climates, has significantly contributed to their growth. Furthermore, their installation in various fire protection systems, particularly in commercial buildings, has paved the way for enhanced safety measures, thus propelling the segment's growth in the alarm check valves market.

Wet Alarm Check Valves:

Wet alarm check valves are installed in water-based fire protection systems, where the piping system is always filled with water. These valves are essential in ensuring that the water flows to the sprinkler system when a fire is detected. The reliability and simplicity of wet alarm check valves make them a popular choice among facility managers and fire safety professionals. There is a growing demand for wet alarm check valves due to their installation in various settings, including residential buildings and commercial spaces. With the increasing emphasis on fire safety measures and the installation of advanced fire suppression systems, this segment is expected to witness robust growth over the forecast period.

Preaction Alarm Check Valves:

Preaction alarm check valves are utilized in systems that require a dual activation process before water is discharged, providing an extra layer of safety. This is particularly useful in environments where water damage from discharge could be as detrimental as fire itself, such as in data centers and libraries. The growing awareness of fire safety and the need for minimizing water-related damages have led to an increase in the adoption of preaction systems, consequently enhancing the demand for preaction alarm check valves. Their unique functionality is gaining traction among property owners and facility managers aiming to mitigate the risks associated with accidental water discharge.

Deluge Alarm Check Valves:

Deluge alarm check valves are designed for use in deluge systems, which discharge a large volume of water onto a fire zone rapidly. These valves are critical in high-hazard areas, such as chemical processing plants and aircraft hangars, where immediate and comprehensive suppression is necessary. The growth of industrial sectors and facilities that require rapid firefighter response has led to an increased demand for deluge alarm check valves. Moreover, advancements in valve technology that enhance their operational reliability and responsiveness are further propelling this segment’s growth within the alarm check valves market.

Retard Chamber Alarm Check Valves:

Retard chamber alarm check valves are specialized valves that incorporate a delay mechanism, allowing a short period during which the alarm can be activated without water flow. This is beneficial in preventing false alarms caused by external factors, such as a burst pipe. The need to minimize disruptions and costs associated with false alarms is pushing many industries to incorporate retard chamber alarm check valves into their fire protection systems. This growing necessity for accuracy and reliability in fire alarms is driving the demand for this particular valve type, ensuring its significance in the overall alarm check valves market.

By Application

Commercial Buildings:

Commercial buildings represent a significant segment in the alarm check valves market due to the high fire risks associated with densely populated workspaces. The growing trend of developing multi-story commercial properties necessitates robust fire protection systems, including alarm check valves, to safeguard occupants and assets. Regulations mandating fire safety measures in commercial properties further encourage the installation of these valves, propelling market growth. As urbanization continues to rise, the number of commercial buildings is expected to increase, thus enhancing the demand for alarm check valves tailored for these environments.

Industrial Facilities:

Industrial facilities are often exposed to various fire hazards due to the presence of flammable materials, machinery, and processes that can ignite fires. As such, the need for effective fire safety systems is paramount, and alarm check valves play a crucial role in ensuring a rapid response in case of an emergency. The growing adoption of automated fire detection and suppression systems in industries is driving the demand for alarm check valves designed specifically for industrial applications. Continuous investments in improving fire safety measures within manufacturing and processing sectors further contribute to the segment's growth.

Residential Buildings:

The residential building segment is witnessing significant growth in the alarm check valves market, driven by the increasing awareness of fire risks and the importance of home safety. Homeowners are becoming more proactive in protecting their properties and loved ones, leading to a surge in installing fire protection systems that include alarm check valves. Additionally, regulatory frameworks encouraging modern safety features in residential properties are also influencing the demand for these valves. As more residential projects are built or renovated, the need for reliable alarm check valves is expected to rise, significantly boosting this segment's growth.

Municipal Buildings:

Municipal buildings, including schools, libraries, and government offices, are required to adhere to strict fire safety regulations. The growing investment in upgrading fire safety systems across public properties is significantly driving the demand for alarm check valves. With the focus on community safety and emergency preparedness, municipal buildings are increasingly equipped with advanced fire protection systems that necessitate the installation of reliable alarm check valves. The commitment to ensuring the safety of public spaces is crucial, leading to sustained growth in this application segment.

Healthcare Facilities:

Healthcare facilities, such as hospitals and clinics, represent a critical segment in the alarm check valves market due to the need for stringent safety measures to protect vulnerable patients and sensitive equipment. The implementation of advanced fire protection systems in these facilities is essential, and alarm check valves play a significant role in ensuring swift responses in emergencies. With the increasing investment in healthcare infrastructure and the adoption of state-of-the-art safety features, the demand for alarm check valves in healthcare settings is anticipated to grow significantly over the forecast period. The heightened focus on patient safety and regulatory compliance further enhances the necessity for reliable alarm systems in this sector.

By Distribution Channel

Online Stores:

Online stores have emerged as a popular distribution channel for alarm check valves, providing consumers with a convenient platform to browse and purchase products. The growth of e-commerce has facilitated greater access to various brands and models of alarm check valves, making it easier for customers to compare and choose the products that best meet their needs. Additionally, online platforms often offer competitive pricing and discounts, attracting more buyers. The rise in online product reviews and ratings also helps consumers make informed decisions when purchasing these safety devices, further driving the growth of this distribution channel.

Specialty Stores:

Specialty stores focusing on fire safety equipment and plumbing supplies have a significant role in distributing alarm check valves. These stores provide expert advice and guidance to customers, ensuring they select the right products for their specific needs. The availability of various brands and models in specialty stores allows customers to have hands-on experience with products before making a purchase. Furthermore, these stores often have trained staff who can offer installation services and support, enhancing the overall customer experience. The reputation and reliability associated with specialty stores contribute to their continued importance in the market.

Direct Sales:

Direct sales involve manufacturers selling alarm check valves directly to consumers or businesses, bypassing traditional retail channels. This distribution model allows manufacturers to establish a direct relationship with their customers, leading to better service and support. By offering competitive pricing and customized solutions, manufacturers can meet the unique needs of their clients effectively. This channel is particularly beneficial for large-scale projects where bulk purchases are common, allowing for greater negotiation on pricing and terms. As manufacturers seek to strengthen their market presence, direct sales are expected to grow in significance within the alarm check valves market.

Indirect Sales:

Indirect sales channels encompass a variety of intermediaries, including wholesalers and distributors, who facilitate the distribution of alarm check valves to retailers and end-users. This method allows manufacturers to expand their reach without directly managing retail operations. Indirect sales play a crucial role in ensuring that alarm check valves are widely available across different markets and geographic regions. The established networks of distributors and wholesalers enable timely delivery and availability of products, contributing to overall market accessibility. As manufacturers seek to penetrate new markets, indirect sales will remain a critical strategy for growth.

Third Party Distributors:

Third-party distributors serve as an intermediary between manufacturers and end-users, often specializing in fire safety equipment. These distributors enable manufacturers to access new markets and customer segments efficiently. They typically have established relationships with various suppliers and can offer a range of alarm check valves from different brands. With their expertise in the fire safety industry, third-party distributors can provide valuable insights into market trends and customer demands. As the alarm check valves market continues to evolve, the role of third-party distributors will be pivotal in facilitating product distribution and ensuring customer satisfaction.

By Material Type

Brass:

Brass is widely used in the manufacturing of alarm check valves due to its excellent corrosion resistance, durability, and good machinability. The combination of these properties ensures that brass alarm check valves function reliably over extended periods, even in demanding environments. The aesthetic appeal of brass also makes it a preferred choice for applications where visible components are installed. The growing focus on quality and durability in fire protection systems is driving the demand for brass alarm check valves, further bolstering their presence in the market.

Stainless Steel:

Stainless steel alarm check valves are favored for their exceptional strength, corrosion resistance, and ability to withstand extreme temperatures. This material is particularly beneficial in industrial applications where harsh environments are prevalent. The increasing adoption of stainless steel components in fire suppression systems is propelled by their long lifespan and reduced maintenance needs. As industries seek reliable and durable solutions for fire safety, the demand for stainless steel alarm check valves is expected to grow significantly, particularly in sectors such as manufacturing and oil and gas.

Cast Iron:

Cast iron has been a traditional choice for alarm check valves due to its reliability and strength. They are particularly useful in large-scale fire protection systems, offering robust solutions for managing water flow in fire suppression systems. Cast iron valves can withstand high pressures and are known for their longevity. However, they may be heavier and less corrosion-resistant than other materials, which can limit their application in certain environments. Nevertheless, the ongoing demand for cast iron alarm check valves persists, especially in industrial settings where durability and performance are crucial.

Aluminum:

Aluminum alarm check valves are increasingly being adopted due to their lightweight nature and resistance to corrosion. This makes them ideal for applications where weight is a concern, such as in high-rise buildings or mobile firefighting equipment. The cost-effectiveness of aluminum also makes it an attractive option for many applications. As the construction industry continues to evolve and prioritize materials that offer both performance and efficiency, the demand for aluminum alarm check valves is likely to grow, further expanding their market share.

Ductile Iron:

Ductile iron is known for its toughness and flexibility, making it a popular choice for alarm check valves that must withstand high pressures and harsh conditions. The material's superior mechanical properties provide significant advantages in various applications, particularly in industrial settings. With the increasing focus on safety and reliability in fire protection systems, ductile iron alarm check valves are becoming more commonplace. The demand for this material type is expected to rise as industries continue to prioritize durable and high-performance solutions for their fire suppression needs.

By Region

The North American region holds a significant share of the alarm check valves market, driven by stringent regulatory frameworks and a robust construction industry. With a market size estimated at approximately $500 million in 2025, the region is expected to grow at a CAGR of about 5.5% through 2035. The emphasis on fire safety in commercial and industrial sectors is propelling the demand for advanced fire protection systems, including alarm check valves. Furthermore, the increased adoption of smart technologies and automation in fire safety solutions is further enhancing market opportunities in this region.

In Europe, the alarm check valves market is projected to witness substantial growth, attributed to the increasing investments in infrastructure development and the rising awareness of fire safety regulations. The market is estimated to reach around $400 million by 2035, with a CAGR of approximately 5.2% during the forecast period. Countries such as Germany, the UK, and France are leading the way in adopting advanced fire safety technologies. The focus on sustainability and eco-friendly building practices also encourages the use of high-quality alarm check valves in fire protection systems across the region.

Opportunities

The alarm check valves market is poised to benefit from several key opportunities, particularly in emerging economies where infrastructural growth is accelerating. Countries in Asia Pacific, Latin America, and the Middle East are experiencing rapid urbanization and industrialization, leading to increased investments in commercial and residential properties. This trend creates a burgeoning demand for effective fire safety solutions, including alarm check valves, presenting an opportunity for manufacturers to penetrate these markets. Furthermore, government initiatives aimed at enhancing fire safety regulations and standards further bolster the potential for market growth. As businesses and property owners become more aware of the importance of fire prevention systems, the demand for alarm check valves is expected to rise, creating opportunities for new product development and innovation.

Technological advancements also present significant opportunities within the alarm check valves market. The integration of smart technologies and the Internet of Things (IoT) into fire safety systems offers manufacturers an avenue to develop more sophisticated alarm check valves capable of providing real-time monitoring and alerts. These innovations not only enhance the reliability and effectiveness of fire protection systems but also appeal to a growing customer base seeking advanced safety solutions. Additionally, the increasing focus on retrofitting existing buildings with modern fire safety features creates further demand for updated alarm check valves, fostering opportunities for manufacturers focused on product improvement and retrofitting solutions.

Threats

Despite the promising outlook for the alarm check valves market, several threats could impede growth. One primary concern is the intense competition among manufacturers, driving prices down and squeezing profit margins. As more players enter the market, particularly in emerging regions, established companies may find it increasingly challenging to maintain market share. This heightened competition could lead to a race to the bottom in pricing, which may adversely affect product quality and innovation. Additionally, the economic uncertainties in certain regions could result in decreased investment in construction and infrastructure projects, directly impacting the demand for alarm check valves.

Another significant threat arises from the rapid advancements in fire safety technologies that may render traditional alarm check valves obsolete. Manufacturers that fail to adapt to changing market dynamics and technological trends risk losing their competitive edge. As customers begin to favor integrated solutions that offer advanced functionalities, companies that rely on outdated products may struggle to retain their market position. Furthermore, fluctuations in raw material prices could lead to increased production costs, impacting the overall profitability of alarm check valve manufacturers. These factors collectively pose substantial risks to the sustained growth of the alarm check valves market.

Competitor Outlook

• Victaulic
• Tyco International
• Honeywell International Inc.
• Viking Group, Inc.
• Siemens AG
• AVK Holding A/S
• ZURN Industries, LLC
• Fire Protection Technologies, Inc.
• Pentair PLC
• Mueller Water Products, Inc.
• Hawle Armaturen GmbH
• FIREMATIC
• Elkhart Brass Manufacturing Company
• Greenspan Company
• Flowserve Corporation

The competitive landscape of the alarm check valves market is characterized by a mix of established players and emerging manufacturers, each vying to capture market share through product innovation and strategic partnerships. Major companies like Victaulic and Tyco International lead the market, leveraging their extensive experience and established reputations to maintain dominance. These companies continually invest in research and development to enhance their product offerings and stay ahead of industry trends. Additionally, strategic mergers and acquisitions in recent years have enabled these firms to broaden their product portfolios and expand their geographic reach, further solidifying their market positions.

Companies like Honeywell International Inc. and Siemens AG are also making significant strides within the alarm check valves market by focusing on integrating advanced technologies into their products. Their commitment to innovation positions them well to meet the evolving demands of customers seeking smart, automated fire safety solutions. Moreover, these companies often collaborate with contractors and builders to promote their products in new construction projects, ensuring their alarm check valves are included in the latest fire protection systems.

Emerging players in the alarm check valves market are also creating competitive pressure by offering specialized products that cater to niche applications within various industries. For instance, firms such as AVK Holding A/S and ZURN Industries, LLC are focusing on designing alarm check valves tailored for specific environments, such as industrial or healthcare facilities, where unique challenges exist. This specialization allows them to differentiate themselves from larger competitors and gain traction in targeted market segments. As these emerging companies continue to innovate and provide customized solutions, they will play a vital role in shaping the future of the alarm check valves market.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 FIREMATIC
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 Victaulic
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Siemens AG
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Pentair PLC
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 AVK Holding A/S
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Greenspan Company
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Tyco International
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Viking Group, Inc.
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Hawle Armaturen GmbH
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 ZURN Industries, LLC
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Flowserve Corporation
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Honeywell International Inc.
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Mueller Water Products, Inc.
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Fire Protection Technologies, Inc.
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Elkhart Brass Manufacturing Company
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Alarm Check Valves Market, By Application
    • 6.1.1 Commercial Buildings
    • 6.1.2 Industrial Facilities
    • 6.1.3 Residential Buildings
    • 6.1.4 Municipal Buildings
    • 6.1.5 Healthcare Facilities
  • 6.2 Alarm Check Valves Market, By Product Type
    • 6.2.1 Dry Alarm Check Valves
    • 6.2.2 Wet Alarm Check Valves
    • 6.2.3 Preaction Alarm Check Valves
    • 6.2.4 Deluge Alarm Check Valves
    • 6.2.5 Retard Chamber Alarm Check Valves
  • 6.3 Alarm Check Valves Market, By Material Type
    • 6.3.1 Brass
    • 6.3.2 Stainless Steel
    • 6.3.3 Cast Iron
    • 6.3.4 Aluminum
    • 6.3.5 Ductile Iron
  • 6.4 Alarm Check Valves Market, By Distribution Channel
    • 6.4.1 Online Stores
    • 6.4.2 Specialty Stores
    • 6.4.3 Direct Sales
    • 6.4.4 Indirect Sales
    • 6.4.5 Third Party Distributors

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Alarm Check Valves Market by Region
  • 10.6 Middle East & Africa - Market Analysis
    • 10.6.1 By Country
      • 10.6.1.1 Middle East
      • 10.6.1.2 Africa

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Alarm Check Valves market is categorized based on

By Product Type

• Dry Alarm Check Valves
• Wet Alarm Check Valves
• Preaction Alarm Check Valves
• Deluge Alarm Check Valves
• Retard Chamber Alarm Check Valves

By Application

• Commercial Buildings
• Industrial Facilities
• Residential Buildings
• Municipal Buildings
• Healthcare Facilities

By Distribution Channel

• Online Stores
• Specialty Stores
• Direct Sales
• Indirect Sales
• Third Party Distributors

By Material Type

• Brass
• Stainless Steel
• Cast Iron
• Aluminum
• Ductile Iron

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Victaulic
• Tyco International
• Honeywell International Inc.
• Viking Group, Inc.
• Siemens AG
• AVK Holding A/S
• ZURN Industries, LLC
• Fire Protection Technologies, Inc.
• Pentair PLC
• Mueller Water Products, Inc.
• Hawle Armaturen GmbH
• FIREMATIC
• Elkhart Brass Manufacturing Company
• Greenspan Company
• Flowserve Corporation