ASTM A351 CF8M Floating Ball Valve, 2PC, 3/4 Inch, 150 LB

Key Specifications / Features

Model No. : TQ41F-150LB

This 2-piece CF8M spring return flanged ball valve is Class 150 rated, built to ASME B16.34 and API 608 standards. It adopts a full-bore floating ball structure with a blow-out-proof stem and anti-static design. The spring lever automatically resets to close after release, delivering bubble-tight shut-off. Seals are PTFE/RPTFE for reliable service from -20℃ to 180℃. It is widely used for emergency cut-off on oil, gas, and mildly corrosive fluid pipelines, with API 598 acceptance testing.


Detail Information

Two-piece Floating Ball Valve

Product Name: Spring Return Flanged 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: 3/4 Inch, DN20
Pressure Class: Class 150 (150 LB)
Body Material: CF8M (ASTM A351 CF8M, equivalent to 316 stainless steel)
End Connection: Raised Face Flanged, ASME B16.5 RF
Design Standard: API 608, ASME B16.34
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 - 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 Class150 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

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Founded in 2013, Bosseal is a professional industrial valve manufacturer based in Suzhou, China. We specialize in the design and production of Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug Valves, and Piping Strainers. All our products are manufactured in strict compliance with international standards, including API, ASME, ISO, DIN, BS, and EN. With a strong focus on quality control and engineering capability, we are committed to providing reliable and high-performance valve solutions for global industrial applications.

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