Bi-Directional Bubble Tight

Bi-directional bubble tight shutoff rated to 10 bar standard and 16 bar optional across DN40–DN600 — reliable isolation in both flow directions.

NSF61 & NSF 372 Certified

Certified by Underwriters Laboratories Inc. to NSF61 and NSF 372, confirming lead-zero content for potable water and food-grade applications.

ATEX Certified

ATEX 2014/34/EU approved for use in explosive atmosphere environments — suitable for petrochemical, flue gas and desulphurization applications.

ABS Ship Certified

ABS (American Bureau of Shipping) manufacture and design assessed — certified for marine and shipbuilding applications.

Wide Seat Material Options

NBR, EPDM, EPT, White EPT, Neoprene, Silicon and FKM seat options cover temperatures from -20°C to +204°C across all media types.

Self-Lubricating Bushing

Self-lubricating bush design rated to 50,000 cycles without jamming — extended maintenance intervals and reliable long-term operation.

Q-Type Design

Q-type design available up to DN350 (14") — no special tools required to disassemble the shaft at top mounting, simplifying maintenance.

Upgraded Shaft Strength

Splined shaft without drilling for taper pin — increased shaft strength and pin-less design for easy maintenance across all sizes.

Disc Indication

Disc indication marked at the shaft end — clearly identifies the disc opening degree at any time without removing the actuator.

Large Bore Flanged Type

VF-737 flanged type covers DN350–DN1800 (14"–72") with ISO 5211 actuator mounting flange and keyway shaft for large bore applications.

Anti-Condensation Option

Anti-condensation heater available on request for applications in cold or humid environments where condensation presents a risk.

Wide Application Range

Suitable for HVAC, shipbuilding, petrochemical, fire control, seawater, flue gas and desulphurization applications across all major industries.