3” Sleeve Style Gas Blowoff Valve
Gas Blowoff Valve
Also known as:
Dump Valve, Compressor Bypass Valve
3” Sleeve Style Gas Blowoff Valve
Gas Blowoff Valve
Also known as:
Dump Valve, Compressor Bypass ValveBuy
Made to Order
Product
Price:
Request for QuoteShipping:
Air freightDelivery Time:
2 WeeksNote:
The 3” Sleeve-Style Gas Blowoff Valve is a fast-acting safety valve used on aero-derivative gas turbines to quickly shut off fuel flow in emergencies, preventing engine damage.Sign in
Welcome back
Sign up
Sign-up and make easy contact all providers in the industry.
Let's create your free account
Executive Summary
The 3” Sleeve-Style Gas Blowoff Valve is a safety-critical gas blowoff valve used on aero-derivative industrial gas turbines. Installed in the fuel line, it acts as a rapid shutoff to stop gas flow instantly in emergency situations, helping prevent severe engine damage.
What makes it unique is its fail-safe design, built to respond quickly and reliably even under extreme heat and pressure. Typically installed in pairs for added safety, it provides trusted protection in high-stakes turbine environments, with a strong track record of performance across millions of operating hours.
Technical Specifications
| Physical Size | 7.5” wide, 25” high |
| Weight | 94 pounds maximum |
| Flange Type | 2.0” ANSI B16.5 CL 600 raised face inlet flange |
| Gas Operation | 720 psig (natural gas), 300°F maximum |
| Fuel Operations | 452 psig, 1100°F compressor discharge air |
| Actuation Pressure | 80 to 125 psig |
| Ambient Temperature | -20 to 240°F |
| Heat Soak | 400°F maximum ambient, 1 to 2 hours |
| Internal Leakage | Complies with MSS-SP-61 |
| Complies with MSS-SP-61 | Dual 24 VDC, 2-wire-SPDT |
Features and Benefits
- Supplied with mounting kit.
- Open and close position indicating switch circuits.
- Fail-safe open (de-energized).
- For use on both DLE and SAC turbine engines.
- No maintenance required under normal conditions.
Print or Share
Do you need information for the team or a client? Download these page to add your dossier.
Send an email with the link to this page. It's a great way to share information.
Detailed Description
The Blowoff Valve is a 3-inch sleeve-style gas blowoff valve designed for use in aero-derivative industrial gas turbines. Its primary function is to isolate gas fuel during turbine shutdowns or emergency events, helping prevent overspeed conditions and damage caused by uncontrolled combustion.
This valve features a solenoid-pilot actuation system and operates with either 24 VDC or 95–140 VDC electrical input. It is designed with a 3-inch outlet flange and built entirely from stainless steel materials to ensure durability and compliance with NACE standards for sour gas environments.
Performance characteristics include a 110 millisecond full-stroke opening time and 1 second full-stroke closing time, meeting the rapid response requirements necessary for turbine protection. The valve is capable of withstanding heat soak temperatures up to 400°F, allowing it to function reliably in high-temperature turbine enclosures.
For safety in hazardous environments, the blowoff valve is certified to CE-ATEX Group IIA, Category 3, Zone 2, T3, supporting its use in oil and gas facilities with potentially explosive atmospheres.
This valve is often used in redundant pairs to provide dual isolation capability, increasing system reliability. Its application is critical to turbine safety systems, ensuring that fuel flow can be quickly and reliably shut off when required.
Engineering Data
