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Glofa Valve Corp.
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STAINLESSS STEEL 316 A351 CF8M CS A216 WCB Flanged x NPT Twin (Double) Ball DBB

STAINLESSS STEEL 316 A351 CF8M CS A216 WCB Flanged x NPT Twin (Double) Ball DBB

Brand Name : GLOFA
Model Number : GF-Q341F
Certification : API 6D
Place of Origin : CHINA
MOQ : 1
Price : 100 USD
Payment Terms : L/C, T/T
Supply Ability : 100 units per month
Delivery Time : 40 DAYS
Packaging Details : PLYWOOD CASES
SIZE : 1/2''~20''
MATERIAL : WCB/A105/CF8/F304/CF8M/F316
BODY : Double Block And Bleed Twin Ball
Bore : Full Bore, Reduced Port
Ball : Double Ball
Bonnet : Bolted Bonnet
Structure : DBB Valve
Installation : Side Entry
Needle Valve : SS316
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• Double (Twin) Balls DBB Type

• Double Block & Bleed
• Floating or Tunnion Mountd Ball
• Full or Reduced Port

• Flange x Flange or Flange x NPT

• Forged Steel Valve Body
• Soft or Metal Seat

• SS Needle Valve For Draining and Venting


• Sizes Range from 2'' to 16'', DN50 to DN400
• Pressure Ratings from CL 150 to CL 2500, PN16 to PN420
• Structured in Side Entry, Bolted Bonnet, Fire Safe Design, Cavity Pressure Self-relief, Emergency Sealant Injection, Double Piston Effect, Double Seal Design, Anti-Blow out Proof Stem and with Anti-Static Device

• Design standard available in API 6D, BS5351, DIN3352, etc, complied with ASME B16.34, API 598 for Test, ASME B16.5 for Flange, ASME B1.20.1 for NPT, API 607 & API 6Fa for Fire Safe, NACE MR 01-75 for Sour Service
• Ends Connections in Flanged F.F R.F or RTJ, NPT
• Body Materials available in Forged Carbon Steel A105, Low Carbon Steel LF2, Alloy Steel F11, F22, Stainless Steel F304L, F304, F316L, F316, Duplex & Super Duplex Steel F51, etc.
• Operation can be equipped with Lever, Gear Box Devices

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• For Glofa Double ( Twin) Balls DBB Ball Valve, the pressure of the fluid is absorbed by the trunnion bearings and is directly transmitted to the valve body, no effecting on the seat and the seat may not bear more pressure, thus the trunnion mounted ball valve have features of less torque, least deformation on the seat, most reliable and stable sealing, long service life. The trunnion mounted ball is supported by the bearings at the up and down, eliminate the high pressure generated from the inlet crash of the fluid to the ball and the seat, minimize the friction and save the torque greatly, easy to operate.

•The spring loaded seat got self-tight ability and may seal the valve at upstream. The series ball valve have two seats in both direction and do not restrict by the installation direction. The soft sealing ring is inlayed into the stainless steel seat, at the end of the SS seat, one spring is loaded to make sure the seat ring get enough pretightening force, in case the seat ring get damaged during work, the spring could still keep sure the seal of the seat ring.

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• Glofa Double (Twin) Balls DBB Ball Valve are with function of self-relief pressure, when the pressure collected in the cavity increase and exceed the max pretightening force that the spring may withstand, the seat would step back and get separated with the ball, then the internal pressure may relieve automatically, the seat will go back its original position after the pressure's relief.

•The series valve has Double Block and Bleed (DBB) function, whenever the valve is fully open or fully closed, the both valve seats at bi-directional may cut off the fluids, the impurity in the cavity will be discharged through the bleed valve.

•In case, the impurity in the medium or fire cause the seat failure or useless, the emergency sealant injection offer another seal through injecting the sealant into the stem or seat.

•The trunnion mounted valve are also placed with one fire-safe sealing ring between the ball and seat in order the fire happening accidently ruin the seat ring, when seat ring get broken, the fire safe seat ring will be pushed onto the ball and generate metal to metal seal effect for achieving the seal again.

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STAINLESSS STEEL 316 A351 CF8M CS A216 WCB Flanged x NPT Twin (Double) Ball DBB Images

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