Blowdown drain valve has two valve cover design. The first is bolted bonnet, according to this design the formal design of the valve, the valve body with the valve cover bolt nut connection, spiral wound gasket (304clip flexible graphite sealing manufacturing ). Customers have special requirements can also be used a metal ring is connected with the second. Design form is the welding of the valve cover, and the design of the formal design of the valve, the valve body with the valve cover is connected with the screw threads, all-welded seal. Customers have special requirements can also be used through welded joints.

Vent valve drain valve extending applied to gate valve, ball valve and stop valve.

Extended valve design structure and characteristics

Emptying guiding shower valve body valve inspection and testing in accordance with API602. API598, by MSS-SP-25. markers

Adopts the following structure

The self-centering platen pressing sleeve type

Threaded, socket or the welding end of prolongation of overall body

Bolt connection, spiral wound gasket to seal the valve cover and the threaded connection, all-welded seal valve cover

Integral seal seat

The socket end with ASME B16.11

Threaded end with ( NPT) ANSI/ASME B1.20.1

Rod bracket type ( OS & Y )

Relative pressure:

· 800LB