نام محصول:
شیر پیستون
نام انگلیسی:
Piston valve
برند:
FLOWSERVE
مشخصات:
Double Block and Bleed Valve is a side-entry ball valve, with either a bolted or welded body, designed for use in upstream, midstream and downstream oil and gas applications. It requires two in-line isolation valves and a bleed valve used to drain or vent trapped fluid between the two closure elements in order to safely isolate the downstream pipe. This feature can be achieved with one single valves complete with a bleed port between the obturators.
Initial and installation cost savings owing to reduced structural requirements of design that saves both space and weight
Increased system reliability from single valve with bleed port between two valves
Improved plant and personnel safety due to anti-blowout stem, fire-safe construction and anti-static design
API 6D/6A
ASME B16.34
NACE MR0175
API 6FA/API 607/API598
Standard
Cast or forged components-bolted body design
Seals: O-Ring + graphite fire safe
Soft seated/Metal seated
Fittings: stem and seat greaser
Self relieving or double piston effect seats
Cavity relief
Cast or forged components-bolted body design
Seals: Lip-seal + graphite fire safe
Soft seated/metal seated
Self relieving or double piston effect seats
Double block bleed
Extended bonnet
Cavity relief
Cast or forged components-bolted body design
Seals: Spiral wound or graphite
Metal seated
Self relieving seats
Extended bonnet
Cavity relief
توضیحات:
Type
piston
Operation
manual
Function
isolation, double block-and-bleed, drain
Media
for oil, for gas
Body$
welded, double, trunnion-mounted, in-line
Applications
for pipes, cryogenic
Material$
metal, cast, graphite
Associated function
expansion, vent
Other characteristics
anti-static, automatic, fire-safe
DN
Min.: 1.813 inMax.: 56 in
Pressure
Min.: 2,000 psiMax.: 10,000 psi
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