Double Block and Bleed Valves

Product overview

Double block and bleed valves are a diverse product grouping, widely used in process lines or process to instrument interfaces for double isolation applications.

The same design features that ensure reliability and long life in our floating and trunnion mounted ball valves are incorporated into our twin ball double block and bleed valve. PJ Valves offers a full range of configuration and material options to meet your application requirements.

Production range

We manufacture our double block and bleed valve range to API, ASME and ISO standards. Specification options are available to meet the complete range of temperature and service requirements encountered across production and processing applications


  • ½” to 24”
  • 150# to API10,000 psi ratings
  • Full, reduced and custom bore
  • Manual or actuated operation

Material scope

PJ Valves believes that every good valve starts with quality raw materials. We are experts in compliance with stringent material specifications including NORSOK, and a wide variety of end user requirements covering both metallic and non-metallic parts.

Increasingly, severe upstream operating conditions mean specifications focus not only on primary valve components, but also elements such as bolting and operator materials. PJ Valves can meet the needs of any project specification through established relationships with our component supply chain.

Carbon steels (LTCS and High yield) Stainless Steel
Duplex/Super Duplex
Ni-Al Brz
Inconel, Titanium and other exotics

According to your project specifications

Radiography/UT testing
Ferrite testing and IGC to ASTM A262

Specialist bolting (enhanced NDT, Xylan coated etc.) elastomers to suit service operators in stainless steel

Features and options

PJ Valves offers outstanding sealing performance, with a choice of soft or metal seating. Uniform operating torques prolong cyclic life, and the complete range is fire safe qualified to API 607/API 6FA.

We incorporate a number of design features into our double block and bleed ball valve range as standard, and further options are available according to customer requirement.


  • Tamper proof antistatic device
  • Blowout proof stem
  • Locking device
  • Profiled seats for long life Star shaped lock washer


  • Stem extensions
  • TCC metal seating, using HVOF application
  • Weld overlays in dynamic sealing areas
  • Lip seal design
  • Stem and seat sealant injection points

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Relevant applications

Mooring applications call for a diverse
range of products with common features in specification and configuration.

High pressures, metal seating and
corrosion resistant alloy materials are typical requirements.

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