©2018 by AL ASAB GENERAL TRADING ESTABLISHMENT. 

 VALVES TYPES

DOUBLE BLOCK AND BLEED VALVES

A Block and bleed manifold is a hydraulic manifold that combines one or more block/isolate valves, usually ball valves, and one or more bleed/vent valves, usually ball or needle valves, into one component, for interface with other components (pressure measurement transmitters, gauges, switches, etc.) of a hydraulic (fluid) system. The purpose of the block and bleed manifold is to isolate or block the flow of fluid in the system, so the fluid from upstream of the manifold does not reach other components of the system that are downstream

 BUTTERFLY VALVES

 

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. The operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe; passing through the disc is a rod connected to an actuator on the outside of the valve Standard / High Performance

Specification:

  • Wafer / Wafer Lugged / Double Flanged

  • Up to 108"

  • Class 150lb to 1500lb

SUB-SEA VALVES

 

Subsea valves are used to isolate or control the flow of material through an undersea pipeline or other apparatus. Most commonly used to transport oil and gas, they are designed to function in a submarine environment, withstanding the effects of raised external pressure, salt-water corrosion, and bubbles or debris in the material carried. Subsea valves undergo stringent testing to ensure high reliability.

Specifications

  • Ball Valves, Gate Valves, Choke Valves

  • 22" to 64"

  • Class 150lb to 2500lb

  • API 6D, API 6DSS. API 6A, API 17D

CRYOGENIC VALVES

Constructed from austenite stainless steel, our cryogenic valves are ideally suited to handle a wide variety of cryogens including LNG, oxygen, ammonia, LPG, methane, and hydrogen. The extreme corrosion-resistance qualities of our valves ensure exceptional performance even in the harshest of atmospheres, like marine environments.

Hy-Lok’s cryogenic valves feature a top-entry, bolted bonnet design for easy in-line maintenance. Valves are pressure rated to 750 psi (52 bar) at 100°F, with a temperature rating of -320°F to 700°F (-196°C to 371°C).

Specification:

  • Gate Valve, Globe Valve and Ball Valve

  • Class 150lb to 1500lb

  • SE, SW, BW and Flanged

  • 316, 304, CF8, CF8M

  • API 600, API 602, BS 1873, API 6D, API 607

DIN VALVES

 

Specification:

  • Gate Valve, Globe Valve and Check Valve

  • Class PN16 to PN160

  • 15mm to 1400mm

  • Carbon Steel, Low Temp Carbon Steel,

  • Stainless Steel and Ductile Iron

AUTOMATION AND CONTROL VALVES

Specification:

  • Angle Seat Piston

  • Globe or Butterfly Valve

  • Conventional or Severe Service

  • Balance Plug / High Capacity

  • Cage or Disk Stack Type

  • Single or Double Port Bodies

  • Three-Way Valve Bodies