Welded Ends Lubricated Plug Valve

Applicable Standards

DESIGN: API-6D & API-599

FACE TO FACE: ASME B16.10 & API6D

FLANGED END: ASME B16.5

BUTT WELD ENDS: ASME B16.5

TEST AND INSPECTION: API-598, API 6D & ISO 15848

CONSTRUCTION: 

• Inverted Top entry Type

• Inverted Bolted Bonnet

• Grease seated closure, balanced pressure

• Grease groove between body and closure to increase sea ling capacity

• Bidirectional

• Manual and actuator operated (gearbox, electric, pneu matic, hydraulic,…)

MATERIALS: WCB, WCC, WC1, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CF8C, Bronze, 4A, 6A, AISI-904L, CK3MCUN, Duplex, Super duplex

PRESSURE AND TEMP.: ASME B16.34

OPTIONS: Jacketed, cryogenic services, H.F. services, All kind of actuators, all type of painting and coating.

Standard Features: the Pressure Balance System

The operating system of Pressure Balanced Lubricated Plug Valves consists in the pressure equalization between the port area and the top/bottom of the plug with two holes. The upper hole connects the plug port area with the top of the plug, while the lower maintains the pressure equalization between the port area and the bottom of the plug. The Pressure Balance System ensure line pressure acts on the plug to reduce the valve torque and avoid the possibility of plug seizure, even after a prolonged time in the open or closed position.

Standard Features Patterns:

Short Pattern-Short Pattern Lubricated Plug Valves have compact face to face dimensions (like a Gate Valve) and rectangular port areas of 40% to 60% of a Full Bore Plug Valve.

Venturi Pattern-Venturi Pattern Lubricated Plug Valves also have a longer face to face but with a rectangular port areas of 40-50% of a Full Bore Plug Valve.

Regular Pattern-Regular Pattern Lubricated Plug Valves have longer face to face dimensions and rectangular port areas of 50-70% of a Full Bore Plug Valve.

Full Bore-Full Bore Lubricated Plug Valves have long face to face dimensions and a round port than is not smaller than minimum diameter specified in Annex A of ASME B16.34 or/and API 6D.

Special Features: Coating & Overlay

KFTE researching and development in cooperation with specialized companies and laboratories, have been the development of special hardfacing and corrosion resistant materials, which have achieved excellent results in Off-Shore application. Most of the main materials used are as follows: Stellite-Duplex-6MO Inconel 625-Nickel Alloy 686 Ultimet Alloy (UNSR31233) Tungsten Carbide.