Meggitt C327845-11 Solenoid Pilot Actuated Gas Shutoff Valve

The Meggitt C327845-11 is a two-inch poppet style gas flow shutoff valve from Parker Meggitt, specifically engineered for fail-safe fuel gas shutoff in industrial gas turbine engines. This solenoid pilot actuated valve has accumulated millions of field operating hours across a variety of industrial gas turbine applications, consistently demonstrating the high reliability of Parker Meggitt design technology. The C327845-11 continues to serve as a trusted component in critical gas turbine fuel systems worldwide.

Technical Specifications

The Meggitt C327845-11 features a physical size of 9.00 inches flange to flange and 15.19 inches in height, with a maximum weight of 80 pounds. The flange type is 2-inch ANSI B16.5 CL 600 raised face flanges, ensuring secure and leak-free connection to gas piping systems. The valve operates with a line pressure range of 0 to 1000 psig and handles fluid temperatures from 32 to 350 degrees Fahrenheit. Ambient temperature operating range extends from minus 65 to 150 degrees Fahrenheit, enabling reliable operation in extreme environmental conditions encountered in outdoor turbine installations.

Performance Characteristics

The C327845-11 delivers flow rates from 0 to 3.5 pounds per second of natural gas, with a flow coefficient Cv of 55. The valve achieves ANSI Class V leakage rating, ensuring minimal gas leakage when closed. Operating time is 100 milliseconds for fail-safe closed when de-energized, and 200 milliseconds to fully open. The pressure drop when fully open is 11 psid maximum at 80 degrees Fahrenheit and 3.5 pounds per second flow, representing efficient flow performance with minimal pressure loss across the valve.

Electrical Specifications

The solenoid actuator is rated for continuous duty operation at 24 VDC nominal voltage with an acceptable range of 20 to 28 VDC. The solenoid draws a maximum current of 2 amperes during operation. A closed position indicating switch is provided, rated at 28 VDC and 2.5 amperes, featuring a 3-wire SPDT configuration. This switch provides remote status feedback to the control system, confirming valve position for safety interlocking and operational sequencing.

Design Features

The Meggitt C327845-11 incorporates poppet style flow control technology for reliable gas flow shutoff. The solenoid pilot actuation mechanism provides rapid response to control signals while minimizing power consumption during continuous operation. The valve design prioritizes fail-safe operation, ensuring that loss of electrical power results in immediate valve closure to prevent uncontrolled gas flow. The robust construction and high-quality materials ensure long service life even in demanding gas turbine applications with frequent cycling and high-temperature gas exposure.

Applications

The Meggitt C327845-11 is deployed in industrial gas turbine applications requiring fail-safe fuel gas shutoff. Typical applications include power generation gas turbines, mechanical drive gas turbines in natural gas compression, and industrial cogeneration systems. The valve is also used in turbine-driven generator sets, gas turbine-powered pumps, and any application where reliable gas flow control and positive shutoff are essential for safe turbine operation. The C327845-11 represents the specific variant of the valve, with the -11 suffix denoting a particular configuration for specific turbine models.