WKM Saf-T-Seal

Slab gate valve

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Simple yet rugged and reliable through-conduit valve

The WKM™ Saf-T-Seal™ slab gate valve uses two floating seats to provide a complete seal with the gate. Each seat has a metal face and a peripheral seal. The fullbore design creates the same pressure drop as an equivalent length of pipe and allows passage of all types of scrapers (pigs).

The valves are designed for a wide range of applications, including

  • mainline and manifold valves
  • tank and station valves
  • storage wells
  • brine-flood or waterflood valves
  • safety valves or emergency shutdown (ESD) valves
  • CCUS, renewable fuels, and ammonia service.

Reliable performance and long life

The Saf-T-Seal valve's through-conduit design provides the following advantages:

  • protection of seat faces
  • smooth, continuous conduit for flow
  • block-and-bleed capability
  • capability for inline, field repairs
  • certified fire safe to API Spec 6FA and ISO 10497
  • fugitive emissions certified per ISO 15848-1.
  • The stem seal is a single fugitive emissions– and fire-tested SLS™ spring-loaded lip seal, which reduces maintenance requirements and eliminates the need for plastic packing.
  • Spring-loaded seats relieve internal body pressure.
  • Stem back seat per API Spec 6D prevents stem ejection.
  • Metal-to-metal seal between the stem and bonnet in the upward position isolates the stem seal from line pressure.
  • Seat and stem injection of lubricant or emergency sealant reduce operating torques, help increase valve life, and provide emergency sealing capability.
  • Installation orientation is flexible.