Home/Products/Keystone K-LOK Series 36/37 High Performance Butterfly Valve

Keystone K-LOK Series 36/37 High Performance Butterfly Valve

The Keystone™ K-LOK Series 36/37 is a high performance butterfly valve rated to ASME Class 150 and 300, available in wafer and lugged style. The unique design does not rely on pressure to assist sealing and therefore seals at high and low pressures, as well as dirty services.

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Specifications
Functions
Product request

Material	316 Stainless Steel, 316L Stainless Steel, Carbon Steel, Duplex, Stainless Steel, Super Duplex
Pressure Class	ASME
Process Connection Type	150RF, 300RF
Seat/Seal Type	High performance
Shutoff Class	Zero Leakage
Standards	API 609, ASME B16.34
Valve Size	NPS 10 / DN 250, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 2 / DN 50, NPS 20 / DN 500, NPS 2-1/2 / DN 65, NPS 24 / DN 600, NPS 3 / DN 80, NPS 4 / DN 100, NPS 6 / DN 150
Valve Size Standard	DN
Valve Type	Butterfly, High performance Butterfly Valve

K-LOK polymer and elastomer seats provide bi-directional, drop-tight shut-off in vacuum as well as at full rated differential pressure. Its unique design does not rely on pressure to assist sealing therefore seals at high and low pressures, as well as dirty services. A variety of materials allows optimum seat life in all applications.
Blow-out resistant shaft is standard on all valves for increased safety.
Unique packing design allows for use in pressure as well as vacuum without modification or special assembly.
Disc taper pins are tangentially positioned half in disc and half in shaft, placing them in compression rather than shear, which eliminates potential for failure.
Rocker-shaped gland bridge compensates for uneven adjustment of gland nuts reducing packing leaks.
Integrally cast disc position stop perfectly locates the disc in seat, achieving maximum seat and seal life.
Extended neck allows for 50 mm (2 inch) of pipeline insulation.
Integrally cast mounting pad provides direct mounting of actuators eliminating the need for costly brackets and couplings.
Flattened body bore at shaft journal ports positions shaft bearings near disc, providing maximum shaft support resulting in reduced wear and longer life.

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Keystone K-LOK Series 36/37 High Performance Butterfly Valve

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