Anti-Condensation Jacket

Jacket option (code J) provides a heating or cooling medium passage around the valve body — preventing condensation, freezing, or solidification of process media in demanding temperature applications.

Double Eccentric Design

Dual offset shaft geometry eliminates disc-seat contact during opening and closing — dramatically reducing wear, lowering operating torque and extending seat life to over 2,000,000 cycles.

Patented Retainer Ring

Proprietary floating retainer (Retainer) design achieves 100% sealing between retainer and body — seat can be stored in fully closed position indefinitely without losing elasticity or causing internal leakage.

Bi-Directional Pressure Holding

Special floating seat design automatically adjusts seat position based on pressure direction — achieving double-sided pressure holding at full close, with bubble-tight shutoff in both directions.

SIL2 Safety Certified

One of the few valve manufacturers in Taiwan and Asia to achieve full series SIL2 safety integrity certification per IEC 61508-1 — suitable for safety instrumented systems in oil, gas and petrochemical plants.

Anti-Blowout Shaft

Mechanical locking bolt prevents shaft blowout under pressure surge — significantly improving operational stability and safety in high-cycle or high-pressure service.

Anti-Dust Bearing System

Precision bearing system keeps shaft isolated from process fluid — preventing powder media from jamming the shaft and maintaining smooth operation without special tooling.

Splined Shaft Torque Transfer

Splined connection between disc and shaft (花鍵軸設計) maximises torque transmission, reduces backlash and eliminates the risk of taper pin failure common in conventional designs.

Anti-Sag Positioning Mechanism

High-precision support platform and tolerance control confirm exact disc-to-body alignment — preventing disc sag when actuators are fitted and eliminating misalignment-induced leakage.

Six Seat Material Options

PTFE, RTFE, PTFE+15%Graphite, PTFE+15%Glass Fibre, PTFE+INCONEL and TFM seat options — covering soft seat, fire safe metal seat and full metal seat requirements across all process conditions.

Cryogenic & High Temp Options

VF-930 series handles cryogenic service to -100°C (-148°F) and high temperature service to +500°C (+932°F) — available with internal polished, emission, jacket and cryogenic special requirement codes.

TUV PED(H) & ATEX Certified

Certified to PED Module H 2014/68/EU and ATEX 2014/34/EU Group II Category 2 GD — fully compliant for European pressure equipment and explosive atmosphere installations.