Double Block And Bleed Trunnion Mounted Ball Valve

LYV®’s high quality the double block and bleed trunnion mounted ball valve (DBB valve) for size inch to 48 inch, and for working pressure ANSI 150lb to ANSI 1500lb that are suitable for different kinds of working requirement environment. We can offer you a good price if you send us your inquiry.

The DBB double ball valve is designed to replace the complicated connection during multiple valves in a traditional pipeline system, which can reduce the leakage in the system, to achieve the quickly emissions and shut-off function. And the DBB double ball valve saves the installation space limit, simplifies the installation program, drop the pressure of the pipe system, convenient to clean and maintain the instrument.

Design & Testing International Standard:

Design Standard : ISO 14313/ ASME B 16.34 /API 6D

Inspection & Testing Standard : API 598/ API 6D

Fire Safe Testing Standard : API 607/API 6FA

Flange To Flange Length : ANSI B 16.10 -Short pattern/ Long pattern

End Connection : Flanged End to ANSI B 16.5, Butt Weld ends, Stock Weld ends.

Manufacturer Size and Pressure Range:

NPS 2” to 48 ” (for ANSI Class 150LB)

NPS 2” to 48” (for ANSI Class 300LB)

NPS 2” to 48” (for ANSI Class 600LB)

NPS 2” to 36” (for ANSI Class 900LB)

NPS 2” to 24” (for ANSI Class 1500LB)

NPS 2” to 12” (for ANSI Class 2500LB)

or

DN50 to DN1200 (for PN0.6Mpa, 1.6Mpa, PN2.0Mpa, PN2.5Mpa)

DN50 to DN1200 (for PN4.0Mpa, PN5.0Mpa)

DN50 to DN1200 (for PN6.3Mpa, PN10.0Mpa)

DN50 to DN900 (for PN15.0Mpa)

DN50 to DN600 (for PN25.0Mpa)

Pipe Bore: Full Bore(FB)/ Reduce Bore(RB)

Construction Body: End Entry

Bonnet/Cover type: Bolted Bonnet/Extended Bonnet

Seat Type: Soft type/ Hardseal Metal Type

Flow Directional: Uni-Directional/Bi-Directional

Service Medium: Natural Gas, Oil, Water, Oxygon gas, etc

Service: SOUR, ISO 15156/ NACE MR0175

Fugitive Emission: ISO 15848

Feature: Fire Safety design

Anti-Static Design

Blow-out Proof Stem

Double block and bleek design

ISO 5211 Mounted IPAD

Valve Operation: Manual Lever / Worm-Gear /Actuator Operated/ Pneumatic Actuator / Motor Actuator

MOC (Bill of Material – BOM) :

Body &Bonnet: ASTM A216 WCB/ A 105N (Carbon steel)

: ASTM A352 LCB / LCC / A350 LF2 (Low temp. carbon steel)

: ASTM A 351 GR. CF 8 / CF 8M / A182 F304 / F316 (SS 304 / SS316) (Stainless Steel)

: ASTM A 351 GR. CF 3 / CF 3M /A182 F304L / F316L (Stainless Steel)

: ASTM A351 Gr. CF8C / ASTM A182 F347

: ASTM A182 F51/ F53 /F53 (Duplex Stainless Steel)

Solid Ball : ASTM A105N+ENP/ A105N+TCC

: ASTM A 182 F304 / F316 (SS 304 / SS 316)

: ASTM A 182 F304L / F316L (SS 304L / SS 316L)

: ASTM A 182 F347

: ASTM A890 4A / 5A/ 6A / A182 F51/ F53 /F55 (Duplex Stainless Steel)

Note: Harseal Metal Seat type Ball surface treatment: ENP, HCR, WC, welding Ni60/ Ni55

Stem : ASTM A182 F6a

:ASTM A182 F304 / F316 / F304L / F316L

:17/4 PH

: ASTM A182 F51/ F53/ F55

Metal Seat Ring: ASTM A105N+ENP/ A105N+TCC

: ASTM A 182 F304 / F316 (SS 304 / SS 316)

: ASTM A 182 F304L / F316L (SS 304L / SS 316L)

: ASTM A 182 F347

: ASTM A182 F51/ F53 /F55

Note: Harseal Metal Seat type Seat Ring surface treatment: ENP, HCR, WC, welding Ni60/ Ni55

Seat sealing : PTFE Virgin / 25% Glass Fillted PTFE – GFT / Carbon Filled PTFE – CFT

: PEEK / Delrin / Grafoil – Graphite Ring

Gland Packing : PTFE Virgin / 25% Glass Filled PTFE – GFT / Carbon Filled PTFE – CFT

: Grafoil – Graphite Ring

What is a Trunnion Mounted Ball Valve?

The trunnion mounted ball valve is a quarterly turning valve that helps stop the flowing medium in the pipelines. The unique feature of the trunnion mounted ball valve is its disk in a round or spherical shape placed in the centre. This keeps rotating to stop or start the flow.