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Forged Steel Double Block and Bleed Ball Valve

DBB valve is a "single valve with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve, with a means of venting /beeding the cavity between the seating surfaces.

Description:      

DBB valve is a "single valve with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve, with a means of venting /beeding the cavity between the seating surfaces.

 

Structure: Single Body

Size: 1/2”~16” (15mm~400mm)

Class: 150LB~2500LB

Connection Ends: Flange, Butt Weld, Socket Weld

Operator: Lever, Gear, Electric, Pneumatic etc.


     

Standards:

Design: API 6D, ASME B16.34, API 608, BS EN ISO17292/ ISO14313

Pressure and Temp. Range: ASME B16.34

Inspection and Test: API598

Flange Ends: ASME B16.5

Butt Weld Ends: ASME B16.25,

Socket Weld Ends: ASME B16.11

Thread Ends: ASME B1.20.1

Fire Safe: API 607


     

Main Materials:

Body Materials: A105 (N), LF2, F304, F316, F51, F55 etc.

Ball Materials: A105+ENP, F304, F304L, F316, F316L, F51, Inconel, etc.

Stem Material: 17-4PH, XM-19, F304, F316, F51 etc.

Seat Material: PTFE, RPTFE, DEVLON, NYLON, PEEK, etc.


     

Design Feature:

Full Bore or Reduce Bore

Double Block & Bleed Design

Emergency Sealant Injection

Cavity Pressure Self Relief 

Blow-out Proof Stem

Anti-fire Safe Design

Anti-static Device


     

FAQ:

Q1: Are you a manufacturer or distributor?

A1: We are a professional manufacturer. We design, manufacture, test and sell industry valves, including ball valves, gate valves, globe valves, check valves, butterfly valves, and so on.


     

Q2: What kind of certificates do you have?

A2: We have API 6D, API 600, API602, API 607, PED/ CE, ISO9001, ISO14001, ISO45001, ISO15848-1, EAC Certificates...


     

Q3: Can you accept OEM?

A3: If the customer authorizes us, we can OEM accordingly.


     

Q4: What about delivery way?

A4: We will choose the delivery way according to the package size, or as you required. Small parcel: by international express, like DHL, FedEx, UPS or TNT Courier. Big cargo: by air or by sea.


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