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API Casting Steel Trunnion Ball Valves

API Casting Steel Trunnion Ball Valves

ANSI Flanged Ball Valve, Floating Or Trunnion Mounted Ball Valve, API608 Ball Valve Manufacturer / Supplier In China, Offering API Casting Steel Trunnion Ball Valves, Cryogenic Globe Valve With Extension Stem, 1500lb High Pressure Forged Floating Ball Valve And So On.

Details

Basic Info

  • Model NO.: QA41F, QA47F, QA341F, QA347F

  • Connection Form: Flange

  • Nominal Pressure: ANSI Class 150 - 2500

  • Structure: Fixed Ball Valve

  • Function: on-off Valve

  • Application: Industrial Usage, Water Industrial Usage, Household Usage

  • Certificates: API6d, Ce, ISO9001

  • Specification: ANSI CLASS150-2500, NPS 2" - 48"

  • HS Code: 8481804090

  • Material: Casting Steel

  • Driving Mode: Worm Gear

  • Channel: Straight Through Type

  • Type: Fixed Ball Valve

  • Temperature: Normal Temperature

  • Face to Face: ASME B16.10

  • Testing Standard: API598, API6d

  • Transport Package: Plywood Case

  • Origin: China

Product Description


Reliable Seat Seal

The structure design of elastic sealing ring has been adopted for ball valves. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Thus, the reliable seal is ensured. When the medium pressure gets higher, the contacting area between seat ring and ball becomes bigger as the sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.

Fire Safe Design

With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. CHAODA's specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal and external leakage of the valve. As required by customers, CHAODA's ball valves with fire safe design can meet the requirement of API 607, API 6FA, BS 6755 and JB/T 6899 .

Reliable Stem Seal

The blow-out proof design has been adopted for the stem of ball valve to ensure that even if the pressure in the body cavity is risen accidently and the packing flange becomes invalid, the stem may not be blown out by medium. The stem is equipped with a backseat design, being assembled from underneath. The sealing force against the backseat gets higher as the medium pressure becomes higher. thus to ensure the reliable sealing of stem under variable medium pressure.

Ball Valve Standards

 Design and manufacture standards:API 6D, API 608, GB/T 12237, BS 5351

 Face to face dimensions standards:ASME B 16.10, GB/T 12221

 Flanged Ends standards:ASME B 16.5,GB/T 9112~9124,HG/T 20592,HG/T 20615,JB/T 74~90,JIS B2238

 Testing inspection standards:API 598, GB/T 13927, GB/T 26480, JB/T9092, ISO 5208

 

 

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