A leading provider of products and services across offshore & shipbuilding and petrochemical industries.
Product Range
Size Range: 2"-24" (DN50-DN600)
Pressure Rating: ASME CLASS 150-2500 (PN16-PN420)
Body Material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, etc.
End Connection: FLAN (RF, RTJ), etc.
Operation: Manual, Pneumatic, Electric, Hydraulic, etc.
Product Introduction
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 valve complete with a bleed port between the
obturators.
Standards
API6D, ASME B16.34, NACE MR0175, API 6FA/API
607/API 598
Product Range
Size Range: 2"-24" (DN50-DN600)
Pressure Rating: ASME CLASS 150-2500 (PN16-PN420)
Body Material: Carbon steel, Stainless steel,
Alloy steel, Duplex stainless steel, etc.
End Connection: FLAN (RF, RTJ), etc.
Operation: Manual, Pneumatic, Electric,
Hydraulic, etc.
Suitable Applications
Double block and bleed valves are most commonly
used in the oil and gas industry, but can also be helpful in many other
industries. It’s typically used where bleeding the valve cavity is required, where
piping needs isolation for maintenance, or for any of these other scenarios:
-Prevent product contamination
-Remove equipment from service for cleaning or
repair
-Meter calibration
-Liquid service near waterways or municipalities
-Transmission and storage
-Chemical injection and sampling
-Isolate instrumentation such as pressure
indicators and lever gauges
-Primary process steam
Features & Benefits
-Initial and installation cost saving 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.
Picture Show
Delivery, Payment and Service
Payment
Terms: Normally 30% down payment before production, 70% balance before
delivery.
Warranty:
12 months after installation or 18 months after shipment whichever comes first.
Delivery
time: Subject to stock availability at placement or order and factory
workloads.
Delivery
method: By Express, or by air, or by sea, as your request.
Delivery
port: Shanghai or as your request.
FAQ
Q: What is the warranty of this product?
A: Standard warranty is 18 months from the date
of shipment or 12 months after installation, whichever occurs first.
Q: What
to look for when selecting a double block and bleed valve?
A: As with
any valve, during selection, one should consider the fluid properties,
pressure, temperature. Perhaps most importantly, however, is how the valve will
be used. With a number of configurations offered, consider which of these will
fit your process and needs best.
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