Spring Return Flanged Ball Valve, A351 CF8M, 1 Inch, 150 LB
Key Specifications / Features
This TQ41F-150LB spring return flanged ball valve is a two-piece full-bore floating ball valve made of ASTM A351 CF8M. Rated Class 150 with an ASME B16.5 RF flange, it meets ASME B16.34 and API 608. Equipped with a blow-out-proof stem and anti-static structure, it auto-closes by spring after release. PTFE seats offer bubble-tight sealing for water, oil, gas, and mildly corrosive media between -20℃ and 180℃, ideal for emergency shut-off in chemical, marine, and oil and gas pipelines, tested per API 598.
Detail Information
Spring Return Flanged Ball Valve
Product Name: Two-piece Floating Ball Valve, Manual Spring Self-reset Lever Type
Model: TQ41F-150LB
Casting Mark: CLASS 150, CF8M
Basic Specification
Valve Type: 2-Piece Floating Ball Valve with Spring Return Handle
Size: 1 Inch, DN25
Pressure Class: Class 150 (150 LB)
Body Material: ASTM A351 CF8M (equivalent to 316 stainless steel)
End Connection: Raised Face Flanged, ASME B16.5 RF
Design Standard: ASME B16.34, API 608
Fire Safe Standard: API 607
Anti-static Structure: Built-in anti-static device
Stem Feature: Blow-out-proof stem
Mounting Pad: ISO 5211 direct mounting platform
Bore: Full Bore
Operation: Manual lever with spring auto-return, spring closed by default
Available Size Range: 1/2 Inch - 4 Inch (DN15 - DN100)
Material Schedule
Valve Body: CF8M, ASTM A351
Ball: CF8M
Stem: 316 Stainless Steel
Seat & Seal: PTFE / RPTFE
Gasket: PTFE or Spiral Wound Gasket
Packing: PTFE Packing
Handle: Stainless Steel with PVC Grip
Return Spring: Stainless Steel Spring
Pressure-Temperature Rating
Maximum Working Pressure at Ambient Temperature: 19.0 bar (275 psig) for Class 150 CF8M
Working Temperature Range: -20℃ to +180℃
Suitable Media: Water, Oil, Gas, Weak Corrosive Fluid
Performance Features
Bubble-tight shut-off, zero leakage under rated pressure
Quick on-off operation; valve automatically closes once the handle is released
Blowout-proof stem to avoid stem ejection under internal pressure
Anti-static assembly for static discharge when handling flammable media
Fire-safe construction for fire-risk working conditions
Full bore design for minimum flow resistance
Two-piece split body structure for convenient disassembly and maintenance
Application
Oil & Gas, Chemical, Petrochemical, Water Treatment, Food & Beverage, Marine, Pipeline Emergency Safety Shut-off
Testing & Inspection
Shell Test Pressure: 1.5 times the class pressure
Seat Seal Test Pressure: 1.1 times the class pressure
Inspection Standard: API 598
Supplier Information
Bosseal Valves (Suzhou) Co., Ltd.
Verified Supplier
Certifications:
