Size Range
2"~48"
Temperature Range
-196℃~650℃
Pressure Rating
ASME CL, 150, 300, 600, 900, 1500, 2500
1. Initial and installation cost savings owing to reduced structural requirements of design that saves both space and weight.
2. Increased system reliability from single valve with bleed port between two valves.
3. Improved plant and personnel safety due to anti-blowout stem, fire-safe construction and anti-static design.
Didtek Double Block and Bleed Ball Valve is a combination of one or more block/isolation ball valves, and one or more bleed/vent valves, usually ball or needle valves. Double block and bleed valves operate on the principle that isolation can be achieved from both the upstream and downstream process flow / pressures. This is achieved by two ball, gate, globe, needle, etc. Valves placed back to back, with a third “isolatable” Valve in the centre cavity.
2'' to 48''
A105
-196 to 650°C
ASTM A479 Type 410
17-4PH
XM-19
ASTM A182 F316
ASME CL150, 300, 600, 900, 1500, 2500
RPTFE, Nylon, Devlon, PEEK, Tek-Fil, TFM
Zero Leakage
ASTM A105 w/ENP
ASTM A350 Gr. LF2 w/ENP
ASTM A182 Gr. F316
ASTM A182 Gr. F316 w/ENP
Three Piece
API 6D, BS5351, ASME B16.34
Flanged
API 598, API 6D
Lioyd's CE, Lioyd's UKCA, EAC, ISO 9001, API 6D, API 6FA
Full
ASME B16.10, API 6D
Oil and Gas Pipeline, Offshore Platforms, Onshore Terminals, Emergency Shutdown, Suction and Discharge Isolation, Block and Bypass, Pumping, Compression and Reinjection Units, Metering Stations, Pig Traps, Surge-Relief Skids, Decoking Isolation, Buried Services, Produced Water (Brine) Services
