The structure of the directional valve is composed of 1 valve body, 1 platform support and 4 side valve covers combined with fixed ball core. The ball core is connected by the valve rod, and the axis can be rotated 90 degrees to realize the function of opening and closing. It is mainly used for pipeline switch, pipeline shunt, and can also design ball core X-shaped opening to achieve medium reversing function.
Design standards:
ANSI B16.34,API608.
Wall thickness standard:
ANSI B16.34,EN12516-3.
Thread standard:
ANSI B1.20.1;BS21;DIN 2999/259;ISO 228/1; ISO7/1;JIS B0203.
Socket welding standard:
ASME B16.11.
Butt welding end standard:
ASME B16.25/ISO1127/EN12627.
Flange end standard:
ASME B16.5 CLASS 150/300; EN1092-1; HG20592 GB/T9113; PN10-PN40; JIS B2238 10K/20K.
Testing standard:
API 598; EN 12266.
Design
ANSI B16.34,API6D,BS5351,DIN3337
Body Material
Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.etc.
NACE MR-01-75/NACE MR-01-03 Special Requirements
Face To Face
ANSIB16.10;DIN3202 F1,F4/F5;GB/T12221;JISB2002
Flanged RF, FF, RTJ Ends
ASME B16.5 CLASS 150/300;EN1092-1;HG20592 GB/T9113
PN10-PN40;JIS B2238 10K/20K
Butt-Weld BW Ends
ASME B16.25,ISO1127/EN12627
Socket-Weld SW Ends
ANSI B1.20.1;BS21;DIN2999/259;ISO228/1;ISO7/1;JIS B0203
Seat Sealing
Integral body seat ,seat welded and overlaid
Valve Operation
Gear,pneumatic,Hydraulic,Electric actuators.
By passes,locking devices,extended stem,etc
Other Design
Anti-static design,automatic pressure relief design, emergency grease injection design, drain valve, anti-corrosion design, anti-sulfur design,etc