• DBB ball valve
  • DBB ball valve

DBB ball valve

Material of DBB valve:  A105,LF2,F304,F304L,F316,F316L,F51,904L,Monel.

Size of DBB valve:  1/2inch(DN15)-36inch(DN900)

Pressure of DBB valve:  150LB(PN16)-2500LB(PN420)

Connection type:  Flange(RF,FM,RTJ),BW,SW, Screw.

The kind of drive:  Wrench,Worm-gear,pneumatic and electric

Design standard:  API6D,API607

Working medium:  Water,sea water,oil,gas,chemical liquid

Operating temperature:  -196℃-425℃


Catalogue:

Double_Block_Bleed_Valve.pdf

Introduction for DBB valve

The DBB ball valve is the abbreviation for the double block and bleed ball valve.some of DBB valves have two balls and one or two needle valves,the two ball valves can opend and closed the medium and two needle valves can discharge pressure of the valves,the ball valve is designed to replace the complex form of the connection of multiple valves in traditional pipes,so as to reduce leakage points in the system and realize fast discharging and closing. The DBB ball valves saves the installation procedures,reduces pressure in the pipe system,faciliates instrument cleaning and maintence and lowers the cost.

dbb ball valve

Key Block EH18 Double Block &Bleed Valve

The EH18 feature two independently operable 5.0mm bore globe style needle valves for isolation service with an intermediate 5.0mm bore globe style needle valve for venting service. Metal seating features as standard for all valves.

The EH18 is integrally forged one piece block & bleed assemblies for primary isolation of pressure take-offs, where the valve is directly mounted to the vessel or process pipe. Instruments may be directly mounted to the valves outlet or alternatively remotely mounted with gauge line/impulse pipe work.

Applications
  • Double Block &Bleed
  • Level Measurement
  • Pressure Measurement
  • Chemical Injection
  • Sampling
  • Flow Measurement

STANDARD FEATURES

  • ½ -inch NPT threaded female outlet as standard to ANSI/ASME B1.20.1.
  • ½ NPT threaded female vent connection to ANSI/ASME B1.20.1.
  • Material Thickness to ANSI B16.34
  • ANSI B16.5 flanged inlet connection, ½ to 2 inch sizes. 150 lbs rated to 2500 lbs rated.
  • API flanged inlet connections sizes to 2 1/16 inch. 3000psig, 5000psig & 10000psig rated.

Globe Style Needle Value Gland Packing Material.

Standard valves are offered with Graphite. PTFE is also available as an option

Dimensions (in mm)

SIZE
(inch.)
RATING
(lb.)
A
(mm)
ØB
(mm.)
1/2" 150 57 89
1/2" 300 57 96
1/2" 600 61 96
1/2" 900 64 121
1/2" 1500 64 121
1/2" 2500 64 134
3/4" 150 57 99
3/4" 300 60 118
3/4" 600 64 118
3/4" 900 64 130
3/4" 1500 64 130
3/4" 2500 64 140
1" 150 57 108
1" 300 60 124
1" 600 64 124
1" 900 67 150
1" 1500 67 150
1" 2500 67 159
1 1/2" 150 60 127
1 1/2" 300 63 156
1 1/2" 600 67 156
1 1/2" 900 67 178
1 1/2" 1500 67 178
1 1/2" 2500 72 203
2" 150 63 153
2" 300 63 165
2" 600 67 165
2" 900 72 216
2" 1500 72 216
2" 2500 73 235



Please check our our catalogue of DBB valve in our web site if you want to know more..




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