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 the single valve with a bleed port between two valves

-Improved plant and personnel safety due to anti-blowout stem, fire-safe construction, and anti-static design.