Isolation Valve Forging & Casting

The Worcot UK design of high integrity valves are widely used in the power plant, oil refining, petrochemical and industries. The range consists of very low emission conventional valves, serve with as emphasis on safety, reliability and longevity.

The Worcot UK offer an extensive range of Gate, Globe and Check valves in accordance with ASME B16.34, API 6D, API 600, API 602, API 623 and compatible British and European standards. Also offer resilient seated double block and bleed wedge gate valves, NACE compliant valves, actuated valves and when necessary, bespoke designs to specific customer requirements.

CAST STEEL VALVES

Features

Several trim combinations available for various services.
Straight-through port design offering a good flow with minimum frictional loss and turbulence.
Cast steel valves suitable for works demanding strength, shock resistance, elongation and heat resistance.
Bypass mounting to equalize pressures.
Normal yoke bushing furnished with ductility resistant to high melting point of above 1000 °C.
Designed for maximum flow with minimum pressure drop if possible.
Precision-ground seating surfaces and revolving disc providing a long life.
In the refineries, power plants, utilities and petrochemical/chemical process industries have been regarded as of great importance about their excellent performance and reliability.
By discriminatory blending of carefully selected materials combined with sound design and precision machining/assembly under strict quality controls.
The products are manufactured in accordance with ASTM, ANSI, or other international standards.

Cast steel valves Product range

Gate valve
Globe valve
Swing Check valve
Tilting Check valve
Dual Plate Check valve

Design standard

ASME B16.34 & API-600 / BS-1414
Face to Face: ASME B16.10
Flanged Ends: From 2” to 24” as per ASME B16.5, above 24” as per ASME B16.47
Butt Weld Ends: ASME B16.25

Pressure classes

ASME 150 – 1500

Sizes

2” – 60” (50mm – 1500mm)
(other sizes under request)

Materials

Carbon Steel : ASTM A216-WCB or Equivalent
Alloy Steel : ASTM A217-WC6, WC9, C5, C12, C12A or Equivalent
Stainless Steel : ASTM A351-CF8, CF8M, CF3, CF3M, CN7M, or Equivalent
Duplex Stainless Steel : ASTM A995-1A, 2A, 4A, 5A or Equivalent
Special Alloy Steel : Inconel 625, Incoloy 825, Hastelloy C, Monel, Al-Bronze
Other materials under request.

Accessories

Bypass, Locking device, Chain wheel, Extension stem, Gearbox etc.

PRESSURE SEAL VALVES

Features

Pressure seal valves are intended for high pressure and high temperature applications in all types of fluid.
A selection of design and material would give an excellent service in nuclear steam generating stations,
industrial/chemical plants and thermal power plants. The pressure seal valves provide the most efficient use for flow passage and sealing, and result in significant weight saving and ease and simple installation and maintenance. Manufacturing and quality assurance procedures include extra controls of dimensional and non-destructive examinations and tests on critical areas such as gasket sealing, weld ends, or stellite sealing surfaces.

Body and Bonnet

Body : Flow areas are designed for minimum turbulence and pressure drop.
Bonnet : Ample stuffing box and stellite back seat are to guide accurately stem and back seat.

Pressure Seal Products range

Flexible wedge Gate valve
Globe valve
Swing Check valve
Tilting Check valve

Design standard

ASME B16.34 & API-600 / BS-1414
Face to Face: ASME B16.10
Flanged Ends: From 2” to 24” as per ASME B16.5, above 24” as per ASME B16.47
Butt Weld Ends: ASME B16.25

Pressure classes

ASME 600 – 4500

Sizes

2” – 60” (50mm – 1500mm)
(other sizes under request)

Materials

Casting : ASTM A216-WCB, ASTM A217-WC6, WC9, C12A, ASTM A351-CF8, CF8M, CF3, CF3M, Duplex, Super Duplex, Inconel 625, Incoloy 825, Hastelloy C, Other materials under request.
Forging : ASTM A105, A350-LF2, A182-F11, A182-F22, A182-F91, A182-F304, A182-F316, A182-F316L, A182-F321, A182-F347, Other materials under request.

Accessories

Bypass, Locking device, Chain wheel, Extension stem, Gearbox etc.

FORGED STEEL VALVES

Features

Serves as efficient stop valves with flow in either direction. They are commonly used where a minimum of pressure drop is important because they offer practically no resistance to flow when fully open. Throttling is not conducive to accurate and consistent flow control. Also the valves may be damaged by the high velocity across the seats. The function best for fully open or fully closed.

Body and Bonnet

Bolted bonnet or welded bonnet
Outside screw & yoke
Solid wedge disc
Renewable seat

Pressure Seal Products range

Gate valve
Globe valve
Swing Check valve
Lift Check valve

Design standard

ASME B16.34 & API-600 / BS-1414
Face to Face: ASME B16.10
Flanged Ends: From 2” to 24” as per ASME B16.5
Butt Weld Ends: ASME B16.25

Pressure classes

ASME 600 – 2500

Sizes

½” – 2” (15mm – 50mm)
(other sizes under request)

Materials

ASTM A105, A182-F5, A182-F9, A182-F11, A182-F22, A182-F304, A182-F316, A182-F304L, A182-F316L, A182-F321, A182-F347, A182-F51, A182-F91, A350-LF2, Other materials under request.

Products Connection

Socket welding, Threaded
Butt welding, Flanged

Accessories

Locking device, Extension stem, etc.

CRYOGENIC VALVES

Features

The Worcot UK Cryogenic valves are specially engineered and designed for piping systems used in the storage and transport of liquefied gasses such as LNG and liquid nitrogen and oxygen. The main structural feature of these valves is an extended bonnet with an enclosed vapor chamber to isolate packing from the cryogenic fluid and thereby allow packing to function properly.
Worcot UK Cryogenic designs and liquid nitrogen testing facilities go much further to assure proven performance in this most demanding application.

Cryogenic Products range

Gate valve
Globe valve
Swing Check valve

Body and Bonnet

As for the materials constituting for low temperature and special consideration must be paid to the materials used at pressure parts as in the case of body and bonnet for Service Temperature range -46 to – 256 °C

Design standard

ASME B16.34 & API-600 / BS-1414
Face to Face: ASME B16.10
Flanged Ends: From 2” to 24” as per ASME B16.5, above 24” as per ASME B16.47
Butt Weld Ends: ASME B16.25

Pressure classes

ASME 150 – 1500

Sizes

2” – 60” (50mm – 1500mm)
(other sizes under request)

Materials

ASTM : Carbon steel Gr. LCB/LC, A351-CF8, CF8M, CF3, CF3M or Equivalent

Accessories

Bypass, Locking device, Chain wheel, Extension stem, Gearbox etc.

BELLOWS SEAL VALVES

Features

As a general valve selection suitable for a specific application, the gate and globe valve should be used mainly for low or medium pressure steam, steam tracing lines, or other services such as heat transfer, where the isolation of vessels may be involved in safety problem. It is also used for toxic or explosive media handling and in every case that a trouble may occur in flow regulation. It should be noted that we have a specially designed valve of which dry escape to gas or fluid is completely prevented. In the valve, conventional stem packing is replaced with flexible metallic membrane where all possible leaking paths through stem or body/bonnet joint are welded. The bellows units applied to this valve were tested for life cycle to destruction, resulting in satisfactory test results meeting the life time, temperature, and pressure requirements of ASME B16.34.

Bellows Seal Products range

Gate valve
Globe valve

Design standard

ASME B16.34 & API-600 / BS-1414
Face to Face: ASME B16.10
Flanged Ends: From 2” to 24” as per ASME B16.5, above 24” as per ASME B16.47
Butt Weld Ends: ASME B16.25
Bellows Inspection and Test : MSS-SP-117

Pressure classes

ASME 150 – 600

Sizes

2” – 10” (50mm – 250mm)
(other sizes under request)

Materials

Bellows Set : SS321 (Bellows) & SS316 (Holder)
Carbon Steel : ASTM A216-WCB or Equivalent
Stainless Steel : ASTM A351-CF8, CF8M, CF3, CF3M or Equivalent

Accessories

Bypass, Locking device, Chain wheel, Extension stem, Gearbox etc.