Pressure Relief Valve suits economizer applications.

Press Release Summary:

Certified under requirements of ASME Code Section I, pilot-operated Series 1500 is designed specifically for overpressure protection of economizers in fossil-fired power plants. All-plastic, soft seat valve operates as non-flowing modulating pilot, opens in proportion to relief demand, and is suitable for hot water, flashing water, and steam service. With no elastomer seats or seals, unit handles temperatures from -65 to 515°F and set pressure range of 15-6,170 psig.

Original Press Release:

Tyco Flow Control Introduces New Series 5100 Pilot-Operated Pressure Relief Valve

New Modulating Action Pressure Relief Valve That Serves Economizer Applications in Power Generation Industry Meets Stringent ASME Code Section I Requirements

Stafford, Texas - June 1, 2007 - Tyco Flow Control, a division of Tyco International Ltd. (NYSE: TYC BXS: TYC) and one of the world's largest providers of flow control products, announces the availability of the new Anderson Greenwood Series 5100 pilot-operated pressure relief valve (click here for high-res image). The new modulating-action, non-flowing, soft seat pilot-operated pressure relief valve is designed specifically for overpressure protection of economizers in fossil-fired power plants in the power generation industry.

The Series 5100 valve is the latest design innovation in pilot-operated pressure relief valve technology from Tyco Flow Control and its Anderson Greenwood brand to meet the most demanding applications. It is the first non-flowing modulating pilot-operated pressure relief valve that is certified under the stringent requirements of the American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code, Section I with steam service capacity certifications in accordance with Section I and water service capacity certifications.

Additionally, it is the first all-plastic soft seat and sealed valve that operates as a non-flowing modulating pilot, requiring no component changes to handle alternating steam and water conditions. This design opens in proportion to relief demand and is suitable for hot water, flashing water and steam service without the operational performance problems usually found with spring-loaded pressure relief valves on economizer service.

"The new Series 5100 valve is the first National Board of Boiler & Pressure Vessel Inspectors capacity certified pilot-operated relief valve in this type of application, replacing a different type of technology that can be problematic," said Matt Buchanio, director of marketing, Americas - pressure relief valve products for Tyco Flow Control. "The Series 5100 pressure relief valve meets the requirements of Code Case 2446 and provides premium performance for this challenging application."

Some features and benefits of this pilot-operated pressure relief valve include:

o Reduced Product Loss. The valve features soft seats for premium tightness before and after relief cycles. The design offers a great alternative to traditional metal seated valves used in these installations.
o Increased System Output. Because of total valve tightness to at least 96 percent of set pressure, the system can be operated closer to set pressure without valve leakage. The result is greater system production capability.
o Reduced Maintenance Costs. Resilient seats greatly extend service life. Costly and time-consuming metal seat lapping is unnecessary.
o Requires no elastomer seats or seals. The result is a modulating, soft-seated, pilot operated valve offering premium tightness with the ability to handle temperatures from -65°F to 515°F (-54°C to 268°C) and a set pressure range of 15 to 6,170 pounds per square inch gauge (psig).

The new Series 5100 pressure relief valve is now available worldwide for shipment. For more information about the new Series 5100 pilot-operated pressure relief valve, please contact Tyco Flow Control at or call 281-274-4400. A brochure on this product is available for download at

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