Autoclave Engineers - Fluid Components is a manufacture of high pressure valves, fittings and tubing. The 6DB series ball valves are double block valves  featuring operational temperatures from 0°F (-17.8°C) to 400°F (204°C) and operational pressures up t0 15,000 psi as well as 316 cold worked stainless steel construction.

Habonim USA is a manufacturer of industrial valves and actuators. Available products include a double block & bleed valve featuring two main isolation valves, and one bleed valve in a single construction, with a size range from 1/2" to 4" and operational temperature range of  -104°F to 480°F. These valves may be operated via manual control, actuated or coupled actuated control.

Alco Valves is a designer and manufacturer of double block and bleed valves and piping interface products. Double block and bleed valve products are offered in flanged, and screwed connection varieties in standard and slim line models. trunnion mounted ball valve models are also available.

Flowserve is a manufacturer and service provider of flow control products. Double block and bleed valve products are build to ASME and ISO 9001:2000 standards and feature minimized leak paths, metal seated valves, double piston seats and extended vent fittings.

PBM Valve Solutions is a valve manufacturer. Double block valve products offered feature 1/4 turn operation, rod-out capability, welded tamper-proof body design, 1/2" to 1" sizes and lockable manual handles with standard and automation available.

Franklin Valve LP is a manufacturer of non-lubricated double block and bleed valves. Double block and bleed valve products feature nickle plated plugs, low torque operation with options including pressure relief systems, extensions, locking devices and actuator activation systems.

ChemValve is a manufacturer of fully lined double block and bleed valves. Products feature up and downstream seats as well as a 1" ANSI class 150 pound rated bottom flange.

Fluoroseal Inc is a manufacturer of sleeved and lined industrial plug valves. Double block and bleed valve products offered feature double port seals on both sides and 1/2" standard drain connection in addition to sealed isolation of the chamber below the plug, and the areas around the plug at 90° to the port openings.

Asco Valves is a designer and manufacturer of valves and valves systems. Product offerings do not include double block and bleed valves, however several varieties of normally open vent valves used in double block and bleed valve systems are available in pipe sizes ranging from 3/8" to 3".

Cameron is a manufacturer of high-integrity, positive Shut-Off Double Block & Bleed Valves which serve the pipline, liquid bulk terminals, aviation fueling, refining, oil/gas production and custody transfer for the petroleum and oil and gas industries. Double block and bleed valve products feature two independently mounted seating slips on tapered plugs which mechanically retract from the seating surface prior to rotating.

Phoenix Precision is a manufacturer of instrumentation valves, including gauge valves, needle valves and instrumentation manifolds. Double block and bleed valves available feature solid bar stock construction and 1/8" or 3/16" bore with needle or ball tip stems.

Western Valve is a manufacturer and remanufacturer of valves. Products include double block and bleed valves featuring 2" to 20" rectangular ports, full bore design and general twin seal.