valves
Excess Flow Valves
Make installation of excess-flow valves as easy as Perfection: We incorporate EFVs directly into Perfection products such as our Permasert couplings and PermaLock tapping tees to help you ensure safe, effective gas delivery.
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Overview
Perfection EFVs prevents catastrophic leakage by tripping automatically: When gas flow reaches a critical rate, the force on a ball exceeds the opposing force on a spring, which causes the ball to seal against a seat. Reset is also automatic: Once downstream damage is corrected, a bleed-by or bypass flow of gas lets upstream and downstream pressures equalize, resetting the valve to its open position. (A full-shut-off EFV is also available, which must be reset manually.)
Specifications
Safety & Compliance
- Approvals
- ASTM F2138, ASTM F1802
General Overview
- Valve Type
- Excess Flow Valve
- Primary Function
- Automatically limits gas flow during line rupture
Construction
- Valve Body Material
- Stainless Steel (stamped)
- Valve Ball Material
- Precision‑ground Nylon
- Elastomer/Seal Material
- Buna‑Nitrile
Dimensions & Sizes
- Service Line Size
- 1/2 CTS, 3/4 IPS, 1 CTS, 1 IPS
Functional Features
- Reset Type
- Bleed‑by automatic reset
Protection & Compliance
- Regulatory Compliance
- U.S. DOT CFR Title 49, Part 192.381
Flow & Performance
- Rated Flow Capacities
- 400, 600, 800, 1100, 1800 SCFH
Mechanical & Physical
- Fitting Configuration
- Tapping Tee, Shut‑off Valve, Stick, Permasert
Media & Industry
- Compatible Media
- Gas
Safety & Compliance
- Approvals
- ASTM F2138, ASTM F1802
General Overview
- Valve Type
- Excess Flow Valve
- Primary Function
- Automatically limits gas flow during line rupture
Construction
- Valve Body Material
- Stainless Steel (stamped)
- Valve Ball Material
- Precision‑ground Nylon
- Elastomer/Seal Material
- Buna‑Nitrile
Dimensions & Sizes
- Service Line Size
- 1/2 CTS, 3/4 IPS, 1 CTS, 1 IPS
Functional Features
- Reset Type
- Bleed‑by automatic reset
Protection & Compliance
- Regulatory Compliance
- U.S. DOT CFR Title 49, Part 192.381
Flow & Performance
- Rated Flow Capacities
- 400, 600, 800, 1100, 1800 SCFH
Mechanical & Physical
- Fitting Configuration
- Tapping Tee, Shut‑off Valve, Stick, Permasert
Media & Industry
- Compatible Media
- Gas
- Approvals : ASTM F2138, ASTM F1802
- Valve Type : Excess Flow Valve
- Valve Body Material : Stainless Steel (stamped)
- Valve Ball Material : Precision‑ground Nylon
- Service Line Size : 1/2 CTS, 3/4 IPS, 1 CTS, 1 IPS
- Reset Type : Bleed‑by automatic reset
- Regulatory Compliance : U.S. DOT CFR Title 49, Part 192.381
- Rated Flow Capacities : 400, 600, 800, 1100, 1800 SCFH
- Primary Function : Automatically limits gas flow during line rupture
- Fitting Configuration : Tapping Tee, Shut‑off Valve, Stick, Permasert
- Elastomer/Seal Material : Buna‑Nitrile
- Compatible Media : Gas
Data Sheet
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Description
File Size
Date
Size
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Description
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Description
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Description
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50561025GN
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51128023
STICK FLP800 BSC 1/2 IPS-SDR 9.3 4710/MD
51128023
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51128031GN
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STICK FLP1100 BSC 3/4CTS-.090 XMD
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