Sell Double Block And Bleed Valve - China

The double block and bleed valve is also called DBB valve, generallysay,

it is make up by two ball valve and one neddle valve or two ballvalve

and a globe valve.

Why some conditions use the Double Block and Bleed valve?

Double Block and Bleed valves have evolved to replace and add the process of bolting together individual valves to make the valves in one body.

it saved a lot of space and meterial, it is the development tendency of the valve in the future.

These new assembly of the double block&bleed valve provides great savings in weight, space and installation times especially in cage isolation.

These savings can be as much as 70% in weight and shown that it can saving 70% installation time on the projects.

However the greatest savings , therefore reducing the risk of the potential hazards this entails such as leak or insecure.

Dual ball is a necessary requirement when maintenance is taking place down stream of the first isolation valve.

These double bllock and bleed valves have also evolved to encompass the function of chemical analysis and mechanical character.

Cavity venting is provided by either two balls or globe OS&Y vent relief valve so that the pressure between the two isolation valves can be safely vented.

Materials

Part Name Material Option

Body : ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12MM / A 352 LCB

Side Piece: ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12MM / A 352 LCB

Ball: ASTM A 182 F304 / A 182 F316 / A 182 F 6a

Body Seal: PTFE / Graphoil / Spiral Wound SS 316 with Graphoil

Seats: PTFE / GET / Graphite filled PTFE

Stem: ASTM A 182 F304 / A 182 F316 / A 182 F 6a

Gland Bush : ASTM A 182 F304 / A 182 F316 / A 182 F 6a

Gland Packing Graphoil: / PTFE

Stem Packing Graphite filled: PTFE / Graphoil

Gland Nut: Stainless Steel

Stem Nut: Stainless Steel

Lever: Carbon Steel with PVC

Disc Spring : Carbon Steel

Studs / Bolts : ASTM A 193 B7 / A 193 B7MM / A 320 L7

Nut: ASTM A 194 2H / A 194 B7M / A 194 B / A 194 8M / A 194 4/7

PS.

* ENO Duplex & Super Duplex Stainless Steel valve datasheets can be provided based on request.

Please indicate Trim required in your request and we will send you the details for these special materials.

Double block and bleed valve

Product Sort: Ball valve>>double block and bleed valve

Pressure: 150LB-1500LB

Size: DN15-DN1200

Design Std: API, DIN, BS, GB, JIS, EEMUA

Product Material: A105 WCA, WCB, WCC, LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3M, CF8C, CK20, CN7M, CD4MCu, CK3MCuN, Cu5MCuC, CN3MN, M35-1, MONEL400, MONEL500, CY40, CW6M

Flange and threaded double block and bleed valve

Pressure: 150LB-1200LB

Size: DN15-DN100

Product Material: A105 WCA, WCB, WCC, LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3M, CF8C, CK20, CN7M, CD4MCu, CK3MCuN, Cu5MCuC, CN3MN, M35-1, MONEL400, MONEL500, CY40, CW6

Company Contact:

• Posted By: ENO Valve Industry Limited

• Phone: 862151877038

• Address: No. 965, Dahua Street , Shanghai, China, , Shanghai , China

• Email:

• Business Description: ENO Valve Industry Limited established in 2003, is one of the leading
  
  suppliers/ stockists/ re exporters of a wide range of valves, pump,
  
  actuators and related accessories in wenzhou, China.
  
  We represent three
  
  reputed manufacturers factory, and support contract manufacture and OEM.