Series 7100 Flow Lift® Piston Check Valve
Norriseal-Wellmark proudly services this product.
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Non-slam piston check valve designed for positive prevention of back-flow in gas, air or liquid systems. This award-winning design, has been installed in critical services around the world, including:
- Air and gas compressor service
- Gas or liquid pipe lines
- Oil and gas production leases
- Pulsating flows
- Safety systems
Available in 1.0-inch through 12-inch sizes in ANSI 150 to 2500 pressure classes in threaded, raised face or ring joint end connections, with optional reduced port trims for low-flow applications.


Features
- No-slam closing
- No special tool required to change seat
- Low pressure drop
- High Cv values
- Smooth opening
- Special trims for abrasive and corrosive services
- Built-in lifting device for piston removal and inspection
- PTFE self-lubricating piston seal
- Low maintenance costs
- Bolted closure
Specifications
- ANSI Class 150 thru 10,000
- API 5,000 and 10,000
- Seal ring: PTFE spring energized
- Seat: cage retained type
- Optional trim meets MR0175 recommended practice

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