LS type Gate Valves

Description

The LS gate valve is a full-bore slab gate valve designed and manufactured in accordance with API 6A and NACE MR-01-75. It is available in standard double flanged, Studded, threaded-end and other special Outlet Connectors and Manual, Pneumatic and Hydraulic operated.

The LC gate valve can be widely used in the Christmas tree, choke and kill manifold, etc.

Structural Features

●  Sealing at the gate-to-seat and the seat-to-body is metal-to-metal.

●  In addition to the metal-to-metal seal between the seat and valve body, two spring loaded, non-elastomeric lip-seals provide maximum protection against intrusion of particle contaminates into the valve cavity, improve gate and seat service life, prevent damage to the body-to-seat seal face, and improve valve performance at very low pressure.

●  One-piece seats and slab gate ensure reliable sealing and simplify field service.

●  Bi-directional seal technology applied for the gate and seat so as to extend service life.

●  The stem shoulder can be backseated against the bonnet to isolate valve cavity pressure, which makes it possible to replace valve stem sealing under pressure.

●  The grease fitting are located on the downstream side of the stem backseat for safety.

●  The seal between the valve body and bonnet is a pressure-energized gasket  on on 10,000 and 15,000 psi WP valves

●  The stem packing is a pressure energized seal and can withstand severe temperatures and fluids. It is constructed of a non-elastomeric material that offers a low coefficient of friction.

●  Non-rising design, and operation of valve doesn't change pressure in valve cavity.

Technical Parameter

●  Bore: 1-13/16"~7-1/16"

●  Pressure Class: 2000PSI ~20,000PSI

●  Material Class: AA ~ HH

●  Temperature Class: L ~ V  (-50℉~ 250℉)

●  Product Specification Levels: PSL 1~ PSL 3G

●  Performance Requirements：PR 1, PR 2