China DBB ball valve supplier

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℃

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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