Polymer Seated | Keystone

Series 36/37

Keystone Butterfly Valves, High Performance

K-LOK® Series 36 – ASME 150 K-LOK® Series 37 – ASME 300

Features & Benefits:

Features and benefits

  • 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 two inches 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.

Technical data

Size range:
NPS 2 to NPS 24 See note below for NPS 30-36

Vacuum rating:
4 x 10-5 in Hg

Pressure rating:
Series 36 – ASME 150
Series 37 – ASME 300

Temperature rating:
-40°F to 1000°F
Full compliance to API 609 standard.
Metal seated, fire-safe and NPS 30-36 valves are available.

For more information on these items see Figures 360/362 data sheet (VCTDS-00032).

Lug body is full rated for bi-directional dead end service as a standard.

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Technical Data Sheets

K-Lok HPBV Series 36/37 (Canadian French)

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Technical Data Sheets

K-Lok HPBV Series 36/37 (English)

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Installation & Maintenance Instructions

K-Lok HPBV Series 36/37 IOM - imperial (English)

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CAD Drawings

GRL_DN900_28_Lug_ISO_Disc_Closed.stp (English)

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Installation & Maintenance Instructions

K-Lok HPBV Series 36/37 IOM - imperial (French)

Download | E-mail Document

Operating & Safety Instructions

PED - K-Lok High Performance Butterfly Valves (French)

Download | E-mail Document

Technical Data Sheets

K-Lok HPBV Series 36/37 (Spanish)

Download | E-mail Document

Installation & Maintenance Instructions

K-Lok HPBV Series 36/37 IOM (Spanish)

Download | E-mail Document

Operating & Safety Instructions

PED - K-Lok High Performance Butterfly Valves (Spanish)

Download | E-mail Document