FAV Double Block and Bleed (DBB) Valves , Needle Valve offer a compact, rigid, lighter, safer, and cost-effective solution for installing gauges, transmitters, and critical equipment. They provide positive isolation, protecting personnel and equipment, and are an excellent alternative to traditional multi-valve systems that are threaded or welded. With their durable construction and compact design, FAV DBB type Needle Valves ensure reliable performance, simplified maintenance, and increased safety in industrial processes, including chemical processing, oil and gas, and power generation.

Double Block and Bleed (DBB) Valves , Needle Valve

Selection Criteria for  Double Block and Bleed Valve , Flange X Thread   3 x Needle Valve

– Connection Types:

  1. Flange to Pipe
  2. Flange to Flange
  3. Pipe to Pipe

– Configurations:

  1. Ball-Needle-Ball
  2. Ball-Ball-Ball
  3. Ball-Needle
  4. Needle-Needle-Needle

Materials of Construction

  1. SS 316
  2. Carbon Steel
  3. Duplex (31803, 32550, 32205)
  4. Super Duplex (32760, 32750)
  5. Inconel (625, 825)
  6. Hastelloy C276
  7. Monel 400
  8. 6Mo (SMO 254)
  9. Titanium Grade 2

Seal Materials

  1. PTFE
  2. Grafoil
  3. PCTFE
  4. FKM

Sizes and End Connections

– Pipe End:

– Sizes: 1/4″, 3/8″, 1/2″, 3/4″, 1″

– Threads: NPT, BSPP, BSPT (Male and Female)

– Flange End:

– Class: 150, 300, 600, 900, 1500, 2500

– PN: 6, 10, 16, 40, 64, 100, 160, 200, 250

– Face Types: Raised Face (RF), Ring Type Joint (RTJ)