KVC UK LTD.

KVC UK LTD.

PRODUCTS

Gate, Globe, Check, Ball Valve.

Valve Designs

 

BALL VALVE TRUNNION MOUNTED 3-PIECE

FEATURES  :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Bolted Construction
  • Secondary Sealant Injection

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″-56″ DN50-1400 (Full Bore) 2″- 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
RPTFE/ NYLON/ DEVLON/ PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Burried Service
  • Extension Stems
  • Special Bore Dimensions
  • Bespoke Design



BALL VALVE TRUNNION MOUNTED FULLY WELDED CONSTRUCTION

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Fully Welded Construction
  • Secondary Sealant Injection

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″- 56″ DN50-1400 (Full Bore) 2″- 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
RPTFE/ NYLON/ DEVLON/ PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Burried Service
  • Extension Stems
  • Special Bore Dimensions
  • Bespoke Design



BALL VALVE TRUNNION MOUNTED TOP ENTRY

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Bolted Construction
  • Secondary Sealant Injection

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″-56″ DN50-1400 (Full Bore) 2″- 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
RPTFE/ NYLON/ DEVLON/ PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Burried Service
  • Extension Stems
  • Special Bore Dimensions
  • Bespoke Design



BALL VALVE SUBSEA APPLICATIONS

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Bolted Construction
  • Secondary Sealant Injection

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″ -56″ DN50-1400 (Full Bore) 2″ – 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
RPTFE/ DEVLON/ PEEK/ METAL
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Extension Stems
  • Bespoke Design



BALL VALVE CRYOGENIC APPLICATIONS

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Bolted/ Welded Construction

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″ -56″ DN50-1400 (Full Bore) 2″ – 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Stainless Steel/ Duplex/lnconel
Stainless Steel/ Duplex/lnconel
Stainless Steel/ Duplex/lnconel
RPTFE/ PCTFE/ METAL
LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Extension Stems



BALL VALVE METAL to METAL SEAL TRUNNION & FLOATING

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Double Block and Bleed Function
  • Bolted Construction
  • Ball and Seat Hard surface Coating

END CONNECTION :
ASME RF/ RTJ Flange/ BWE/ HUB/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″ -56″ DN50-1400 (Full Bore) 2″ – 56″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500 API 5000, 10000
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
Tungsten Carbide/ Chrome Carbide
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Burried Service
  • Extension Stems
  • Special Bore Dimensions
  • Bespoke Design



BALL VALVE 2-PIECE FLOATING

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Bolted Construction

END CONNECTION :
ASME RF/ RTJ Flange

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″ -10″ DN50-1400 (Full Bore) 2″ – 10″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
PTFE/RPTFE/NYLON/DEVLON/PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Extension Stems
  • Bespoke Design



BALL VALVE 1-PIECE FLOATING

FEATURES :

  • Reduced Bore Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation

END CONNECTION :
ASME RF/ RTJ Flange

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 2″ -10″ DN50-1400 (Full Bore) 2″ – 10″ DN50-1400 (Reduced Bore)
-196 +280C
ANSI CLASS 150-2500
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
PTFE/RPTFE/NYLON/DEVLON/PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/LIPSEALS/ GRAPHOILS
OPTIONAL FEATURES :
  • Extension Stems



BALL VALVE SCREWED & WELD END

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Anti-static Conatruction
  • Dependable and Easy Operation
  • 1/ 2/ 3 – Piece Designs
  • Bolted Construction

END CONNECTION :
SCREWED/ SOCKET WELD/ BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1/4″- 3°DN08-80 (Full Bore) 1 /4″ – 3″ DN08-80 (Reduced Bore)
-196 +280C
ANSI CLASS 800/1500
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/ LTCS/Stainless Steel/Duplex/lnconel
Carbon/Stainless Steel/Duplex/Inconel
RPTFE/ DELRIN/ PEEK/ METAL
PTFE/GRAPHOILS
OPTIONAL FEATURES :
  • Firesafe



BALL VALVE 3-WAY CONFIGURATIONS

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Anti-static Construction
  • Dependable and Easy Operation
  • Firesafe Construction

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1/2″-16″ DN15-400 (Full Bore) 5″ -18″ DN125-450 (Reduced Bore)
-196 +280C
ANSI CLASS 150/300
Carbon/ LTCS/Stainless Steel
Stainless Steel
Stainless Steel
PTFE/RPTFE/PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/ GRAPHOILS
OPTIONAL FEATURES :
  • Various Port Configuration



BALL VALVE STEAM JACKETED

FEATURES :

  • Full Bore and Reduced Type
  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Dependable and Easy Operation
  • Soft or Metal Seat Design
  • Maintain Reliable Temperature of Pipe Fluid

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 3/4″ -8″ DN20-200
-196 +280C (Soft) , -196 +650C (Metal)
ANSI CLASS 150-300
Carbon/ LTCS/Stainless Steel
Stainless Steel
Stainless Steel
PTFE/RPTFE/PEEK/ST ST+HF
VITON/ NBR/ HNBR/ FFKM/ AED/ GRAPHOILS
OPTIONAL FEATURES :
  • Various Jacket Connections



BALL VALVE TANK BOTTOM

FEATURES :

  • Blow-out Proof Stem
  • Firesafe and Anti-Static Construction
  • Fluid is Discharged Rapidly
  • Valve Body Cavity is specially polished to prevent liquid cohesion

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1″ -8″ DN25-200
-196 +280C
ANSI CLASS 150-300
Carbon/ LTCS/Stainless Steel
Stainless Steel
Stainless Steel
PTFE/RPTFE/PEEK
VITON/ NBR/ HNBR/ FFKM/ AED/ GRAPHOILS
OPTIONAL FEATURES :  



GATE VALVE WEDGE

FEATURES :

  • Cast or Forged Construction
  • Easy Operation
  • Flexible or Solid Wedge
  • Standard API Trim Configurations
  • Dpendable Sealing
  • Excellent Wear and Corrosion Reistance
  • Low and High Temperature Service

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1/2″ – 56″ DN 12-1400
-196 +870C (Dependent on design)
ANSI CLASS 150-1500
Carbon/ LTCS/Stainless Steel/Cast Iron/ Ductile Iron/ Alu Bronze
Gun Metal/ Alu Bronze/Stainless Steel/ Monel/Ductile Iron (Nickel or Epoxy Coated)
Stainless Steel/ Duplex/ Monel/Inconel
F6/304/310/Hard F6/Monel/Hard Monel/316/ Hard 316
METAL/ GRAPHOIL
OPTIONAL FEATURES :  



GATE VALVE SLAB

FEATURES :

  • Cast or Forged Construction
  • With or Without Diversion Hole
  • Soft or Metal Sealing
  • Stem Isolated from Media
  • Spring Energised for Low Pressure Seal
  • Back Seal Structure

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1/2″ – 36″ DN 12-900
-196 +870C (Dependent on design)
ANSI CLASS 150-2500
Carbon/ LTCS/Stainless Steel
Stainless Steel
Stainless Steel/ Duplex/ Monel/Inconel
F6/304/310/Hard F6/Monel/Hard Monel/316/ Hard 316
METAL/ GRAPHOIL
OPTIONAL FEATURES :  



GLOBE VALVE

FEATURES :

  • Cast or Forged ConstructionEasy
  • Operation
  • Flexible or Solid Wedge
  • Standard API Trim Configurations
  • Dpendable Sealing
  • Excellent Wear and Corrosion Reistance
  • Low and High Temperature Service

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
BALL :
STEM :
SEAT :
SEALS :
 1/2″ – 12″ DN 12-300
-196 +870C (Dependent on design)
ANSI CLASS 150-1500
Carbon/ LTCS/Stainless Steel/Cast Iron/ Ductile Iron
Gun Metal/ Alu Bronze/Stainless Steel/ Monel/Ductile Iron (Nickel or Epoxy Coated)
Stainless Steel/ Duplex/ Monel/Inconel
F6/304/310/Hard F6/Monel/Hard Monel/316/ Hard 316
METAL/ GRAPHOIL
OPTIONAL FEATURES :  



CHECK VALVE SWING

FEATURES :

  • Cast or Forged Construction
  • Easy Operation
  • Flexible or Solid Wedge
  • Standard API Trim Configurations
  • Dpendable Sealing
  • Excellent Wear and Corrosion Reistance
  • Low and High Temperature Service

END CONNECTION :
FLANGED OR BWE

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
DISC/ BALL/ PLATE :
STEM or PIN :
SEAT :
SEALS :
 1/2″. 12″ DN12-300
-196 +870C (Dependent on design)
ANSI CLASS 150-1500
Carbon/ LTCS/Stainless Steel/Cast Iron/ Ductile Iron
Gun Metal/Alu Bronze/Stainless Steel/ Monel/Ductile Iron (Nickel or Epoxy Coated)
Stainless Steel/ Duplex/ Monel/Inconel
F6/304/310/Hard F6/Monel/Hard Monel/ 316/ Hard 316
METAL/ GRAPH OIL
OPTIONAL FEATURES :  



CHECK VALVE DUAL PLATE WAFER

FEATURES :

  • Small and Light
  • Quick Reaction Plate
  • Free from Resiistance and loss of Fluid
  • Horizontal and Vertical Piping
  • Standard/ Low-coil/ high-coil spring
  • Double Flanged

END CONNECTION :
ANSI/ AWWA/ BS/ DIN/ JIS/ API/RF/RTJ Flange/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
DISC/ BALL/ PLATE :
STEM or PIN :
SEAT :
SEALS :
 2″ – 18″ DN50-450
-196 +538C (Dependent on design)
ANSI CLASS 125/150-2500
Carbon/ LTCS/Stainless Steel/Cast Iron/ AL-Bronze
Carbon/ LTCS/Stainless Steel/Cast Iron/ AL-Bronze
Stainless Steel/ Duplex/ Inconel
Nitrile/Viton/Teflon/Metal
Nitrile/Viton/Teflon/Metal
OPTIONAL FEATURES :
  • Retainerless Design Available



CHECK VALVE SINGLE PLATE WAFER

FEATURES :

  • Small and Light
  • Quick Reaction Plate
  • Free from Resiistance and loss of Fluid
  • Horizontal and Vertical Piping
  • Standard/ Low-coil/ high-coil spring
  • Double Flanged

END CONNECTION :
ANSI/ AWWA/ BS/ DIN/ JIS/ API/RF/RTJ Flange/NORSOK/

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
DISC/ BALL/ PLATE :
STEM or PIN :
SEAT :
SEALS :
 2″ – 18″ DN50-450
-196 +538C (Dependent on design)
ANSI CLASS 125/150-2500
Carbon/ LTCS/Stainless Steel/Cast Iron/ AL-Bronze
Carbon/ LTCS/Stainless Steel/Cast Iron/ AL-Bronze
Stainless Steel/ Duplex/ Inconel
Nitrile/Viton/Teflon/Metal
Nitrile/Viton/Teflon/Metal
OPTIONAL FEATURES :  



CHECK VALVE PISTON

FEATURES :

  • Bolted Cover
  • Y-Pattern available
  • Body Guided Hardened Disc
  • Internal Stellite Hardened Seat
  • Asbestos Free spiral Wound Gasket

END CONNECTION :
SOCKET/ THREAD/ BUTT WELD END

SIZE :
TEMPERATURES :
PRESSURE :
BODY :
DISC/ BALL/ PLATE :
STEM or PIN :
SEAT :
SEALS :
 1/4″ – 2″ DN08-50
-196 +538C (Dependent on design)
ANSI CLASS 800 & 1500
Carbon/ LTCS/Aloy Steel/Stainless Steel/
Carbon/ LTCS/Stainless Steel/
Stainless Steel/ Duplex/ Inconel
Nitrile/Viton/Teflon/Metal
Nitrile/Viton/Teflon/Metal
OPTIONAL FEATURES :  

 

 

CAST STEEL VALVES

(GATE, GLOBE & CHECK)

REFERENCE STANDARDS AND SPECIFICATIONS


PERFORMANCE FOR ANY APPLICATION
In fluid process systems, it is valves which are the controlling elements. They are responsible for stopping and starting flow, throttling or regulating flow, prevention of backflow and for regulating pressure.

KVC (UK) Ltd valves are used in a wide variety of applications the following descriptions will provide a simple guide in the selection of these types of valves.

GATE VALVES
Gate Valves serve as efficient stop valves with flow in both directions. They are used where a minimum pressure drop is important. Gate valves should not be used for Throttling since partially open gate valves display flow characteristics which will not help maintain accurate and consitent flow control. Partially open gate valves may also be damaged by the high velocity across the valve seats. They function best as ON/OFF valves either in the fully open or fully closed position.

GLOBE VALVES
Globe valves are suited for service where Throttling is required. Globe valve flow characteristics allow accurate and repeatable flow control. Caution should be taken to avoid very close throttling when the pressure drop exceeds around 20%. This close throttling can lead to excessive noise or vibration and can result in damage to the valves and other piping system components. If these conditions are expected please contact KVC (UK) Ltd for advice.

SWING CHECK VALVES
Swing Check Valves prevent backflow through pipelines. The valves can be installed in horizontal or vertical, upward flow, piping. They can serve to offer resistance to flow and are best suited to low velocity service condiditons.


MATERIALS OF CONSTRUCTION (SERVICE CONDITIONS)

(1) Upon prolonged exposure to temperatures above 800°F (426°C) 1 the carbide phase of carbon steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F (426°C)

(2) Product used within the jurisdiction of Section 1 Power boilers of the ASME boiler and pressure vessel code is subject to the same temperature limitations as specificed in that document.

(3) Product used within the jurisdiction of Power piping, ASME Code for Pressure piping B31.3, is subject to the same maximum temperature limitations placed upon the material in that document.


GATE VALVES

Gate Valves are the most commonly used shut-off valve in the industry today.

CAST STEEL GATE VALVES


KVC (UK) LTD Gate valves are manufactured to API Std.600 and tested to API Std.598
Gate Valves are the most commonly used shut-off valve in the industry today. They are used where minimum pressure drop and bi-directional on-off service is required. Gate valves are not designed for throttling service. Prolonged use in the partially open position may lead to premature wear and damage to the seating surfaces.

Our standard offering has a rising stem with an outside screw and yoke.

BODY AND BONNET

  • Back-Seat Bushing
  • Gland can be Re-packed in-situ
  • Wedge Clear of Flow in Full Open Position
  • Low Pressure Drop across valve
BOY-BONNET JOINT / GASKET
Range of materials to suit Pressure Classes

WEDGE
Flexible wedge as standard (Solid Wedge available on request)
Reduces the likelihood of the wedge sticking Fully guided wedges

 

WELDED-IN SEAT RING
Seat Ring is seal welded to eliminate potential leak paths. (Renewable seat rings can be supplied on request.)

STEM

  • One piece stem, forged tee-head connection
  • Rolled or cut ACME threads subject to valve size
  • Polished on the packing contact area
  • Ensures long life & optimal tightness
  • Engineered stem break-point above packing area
  • Ensures sealing integrity to atmosphere.
GLAND
The Gland Flange & Packing Gland are manufactured in two separate pieces Adjustable gland in service Optional live loaded gland can be specified Backseated design allowing the gland packing to be replaced in situ.

STUFFING BOX
  • Packing contains corrosion inhibitor to avoid stem pitting.
  • Deep stuffing box design ensures long packing life.

END CONNECTIONS
As Standard production covers valves with:
Flanged ends to ANSI B16.5
RF Raised face serrated finish or,
On request, with any other type of finish
RTJ Ring Type Joint

Others
Butt-welding ends (BW) to ANSI B16.25
Customer must specify the type of schedule required, or class of pipe, or diameter and bore.

Special end connections on request.

FACE to FACE
Face to Face dimensions to ANSI B16.10.

HANDWHEEL
Handwheels designed for ease of operation.

GEAR OPERATED VALVES
Valves can be supplied with bevel gear operators.

MOTOR OPERATED VALVES
On request valves can be supplied equipped with, or prepared for actuators Electric /Pneumatic /
Hydraulic (according to customers’ requirements).

Customer is to advise all service requirements and applicable specification with enquiry.

ACCESSORIES
OnRequest:
By-passes, locking devices, chain wheels, floor stands, special extension stems and others.

TESTING
Standard Testing is in accordance with API 598. Customer specific testing by agreement.



GLOBE VALVES

Globe Valves are used where throttling and shut off are required. Close throttling can lead to altered velocities, this leads to excessive noise and vibration which can damage the valve or piping system.

CAST STEEL GATE VALVES

KVC (UK) LTD Globe valves are manufactured to BS 1873, B16.34 and tested to API Std.598
Globe Valves are used where throttling and shut off are required. They can also be used for on-off service, but due to high pressure drop, this is generally confined to applications where the valve is normally closed and pressure drop is not important when the valve is open. Close throttling can lead to altered velocities, this leads to excessive noise and vibration which can damage the valve or piping system.

BODY AND BONNET

  • Back-Seat Bushing
  • Gland can be Re-packed in-situ
  • Spherical body with large radius, allows stress and turbulence to be minimised
BOY-BONNET JOINT / GASKET
Range of materials to suit Pressure Classes

DISC
Valves are supplied with plug type disc as shown

 

WELDED-IN SEAT RING
Seat ring is seal welded to eliminate potential leak paths.

STEM

  • One piece stem, forged tee-head connection
  • Rolled or cut ACME threads subject to valve size
  • Polished on the packing contact area
  • Ensures long life & optimal tightness
  • Engineered stem break-point above packing area
  • Ensures sealing integrity to atmosphere.
GLAND
  • The Gland Flange & Packing Gland are manufactured in two separate pieces
  • Adjustable gland in service
  • Optional live loaded gland can be specified
  • Backseated design allowing the gland packing to be replaced in situ.

STUFFING BOX
  • Packing contains corrosion inhibitor to avoid stem pitting.
  • Deep stuffing box design ensures long packing life.

END CONNECTIONS
As Standard production covers valves with:
Flanged ends to ANSI B16.5
RF Raised face serrated finish or,
On request, with any other type of finish
RTJ Ring Type Joint

Others
Butt-welding ends (BW) to ANSI B16.25
Customer must specify the type of schedule required, or class of pipe, or diameter and bore.

Special end connections on request.

FACE to FACE
Face to Face dimensions to ANSI B16.10.

HANDWHEEL
Handwheels designed for ease of operation.

GEAR OPERATED VALVES
Valves can be supplied with bevel gear operators.

MOTOR OPERATED VALVES
On request valves can be supplied equipped with, or prepared for actuators Electric /Pneumatic / Hydraulic (according to customers’ requirements).

Customer is to advise all service requirements and applicable specification with enquiry.

ACCESSORIES
OnRequest:
By-passes, locking devices, chain wheels, floor stands, special extension stems and others.

TESTING
Standard Testing is in accordance with API 598. Customer specific testing by agreement.



SWING CHECK VALVES

Swing Check valves are automatically actuated. They are used to prevent flow reversal in piping systems.

CAST STEEL SWING CHECK VALVES

KVC (UK) LTD Swing Check valves are manufactured to BS 1868, B16.34, and tested to API std.598
Swing Check valves are automatically actuated. They are used to prevent flow reversal in piping systems. They are suitable for service in the horizontal and the vertical orientation (flow up through valve). Swing check valves have low pressure drop characteristics and are best suited for moderate velocity applications. There is no tendency for the seating surfaces of swing check valves to gall or score, this is due to the fact that the disc meets the flat seat squarely and there is no rubbing upon contact.

BODY

  • Spherical body with large radius, allows stress and turbulence to be minimized
  • Strong construction assures safety, even above pressure and temperature limits.

BOY-BONNET JOINT / GASKET
Range of materials to suit Pressure Classes

DISC
Designed to close on its own weight to stop backflow.

 

 

WELDED-IN SEAT RING
Seat ring is seal welded to eliminate potential leak paths.

END CONNECTIONS
As Standard production covers valves with:
Flanged ends to ANSI B16.5
RF Raised face serrated finish or,
On request, with any other type of finish
RTJ Ring Type Joint

Others
Butt-welding ends (BW) to ANSI B16.25
Customer must specify the type of schedule required, or class of pipe, or diameter and bore.

Special end connections on request.

FACE to FACE
Face to Face dimensions to ANSI B16.10.

TESTING
Standard Testing is in accordance with API 598. Customer specific testing by agreement.