Triple Offset Design

True triple offset geometry eliminates seal wear during operation — sealing surfaces only contact at the final closed position, providing bubble-tight shutoff.

Bi-Directional Shutoff

Floating self-adjustable sealing design with elliptical sealing system ensures flawless bubble-tight shutoff in both flow directions.

API 607 Fire Safe

Certified fire safe to API 607 and ISO 10497, suitable for use in fire risk environments across oil & gas, refinery and petrochemical service.

SIL 3 Capable

Suitable for safety instrumented systems up to SIL 2 in low demand mode, and up to SIL 3 in redundant architecture configurations.

Extreme Temperature Range

Metal seat variants rated from -100°C to +760°C. Laminated seat variants rated from -75°C to +550°C for cryogenic and high temperature service.

Disc Hard Face

Standard disc built with Stellite weld overlay or hard chrome plating — increased hardness and wear resistance for long service life.

Upgraded Shaft Strength

Splined shaft design eliminates drilling for taper pin, increasing shaft strength and simplifying maintenance — pin-less disc design.

Blow-Out Protection

Both shaft stop and bottom cover provide reliable blow-out protection across all operating pressures and temperatures.

Dust Proof Design

Bushing design prevents ingress of foreign material into the shaft area, extending service life in dirty or abrasive environments.

Fugitive Emission Approved

Approved to ISO 15848, TA LUFT and ANSI/ISA-SP-93 for applications requiring controlled fugitive emissions from valve stem sealing.

Wide Material Options

Body, disc and shaft available in WCB, CF8, CF8M, CF3, CF3M, Inconel, Hastelloy, Monel, Alloy 20, Titanium and duplex stainless options.

Cryogenic Service

Cryogenic variant available to BS 6364, rated down to -100°C for LNG, liquid nitrogen and other low temperature process applications.