Double Block & Bleed Valves (Forged) - DS-OLVP-DBB-1

Strong construction and no potential leak points in this one piece 'grain flow controlled' forged body Double Block & Bleed valve

Three main valve configurations; 'D' type 2-ball valve isolates and a needle valve vent; 'F' type 3-ball valves; 'N' type 3-needle valves

Single flange, double flange or triple flange configurations available

On 'D' types bore sizes of 10mm, 14mm and 20mm available, on 'F' types 10mm and 14mm, and 'N' types bore is 5.4mm

Standard materials of carbon steel, stainless steel and duplex stainless steel, other materials available upon request
Key Features

Firesafe to BS 6755 Part 2 and API 607 as standard

Conform to NACE MR-01-75 (latest revision) as standard

Fully material traceable, unique serial number on each valve records a lifetime factory history

Barstock Double Block & Bleed 'instrument' range also available

Flange size 1/2" to 2"

Pressure rating class 150lb to 2,500lb

We only use seal material in our range that is resistant to explosive decompression

Other connections available, for example hub and API flange connection

Other options available - see ball valve and needle valve data sheets
Technical Specification

Our Double Block & Bleed products meet the relevant code requirements of ASME Vlll, ANSI B16.34 / B16.5, ANSI B31.3, BS5500 and API 6D

All major pressure containing components exhibit unique identification coding and material test certificates to BS EN 10204 3.1.B. which are available at a nominal charge (3.1.C. certification also available upon request)

Temperature rating - heavy duty needle valves 540 °C (N & D types), ball valve 200 °C (F & D types)