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
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