Flow-Tek's F15/F30 Flanged Series ball valves feature a floating ball design for low torque and increased cycle life. As standard, larger sized valves feature trunnion-type ball support. These rugged ball valves are ideal for industrial applications.

Fire Safe - Certified to API 607 4th Edition
Flanged Series valves with graphite stem seals have been thoroughly fire tested and meet these standards.

Secure Mount Flanged Series valves offer ease of automation due to an integrally cast actuator mounting pad which complies with ISO 5211 through 2" valve sizes.

• Tested in accordance with ASME B16.34
• Vacuum Service to 29” Hg
• Valve stems are blow-out proof for maximum safety and meet ASME B16.34 specifications
• Valves conform to CE requirements

Stem Seals: Flanged Series 1/2” – 2” valves feature live-loaded, self-adjusting primary and secondary sealing. Utilizing belleville washers, the stem seal automatically adjusts to compensate for changes in temperature and normal wear. 2 1/2”– 12” valves utilize an independent packing gland which can be easily adjusted without removing mounting hardware or operator. The packing gland is contoured to more uniformly distribute the load across the packing.

The primary seal is a combination of a thrust washer and a thrust washer protector. An adjustable stem packing creates a secondary seal between the stem and body. The stem packing is composed of RPTFE V-rings as standard – graphite stem packing is standard on all Fire Safe valves.

Ball: Flow-Tek balls are precision machined and mirror finished for bubble-tight shutoff and less operating torque. As an added safety feature, a hole in the stem slot of each ball equalizes pressure between the body cavity and the line media flow.

Body: 1/2” – 4” valve bodies are investment cast and solution annealed/normalized for the highest quality and added strength. All body castings are marked with a foundry heat number for full traceability. Carbon Steel bodies are phosphate coated for increased corrosion resistance.
Model F15/F30 with Padlock

Seat: Flow-Tek’s seat design ensures bi-directional, bubble-tight sealing with low operating torque. All resilient seats feature relief slots or seat O.D. clearance to relieve pressure past the upstream seat, and positive preloading to ensure low pressure/vacuum sealing.

All manually operated valves feature a Locking Device to prevent accidental movement of ball position. Valves 1/2” – 2” feature a safety trigger that locks the handle in the open or closed position. The handle lock can be bypassed, if needed, with a small bolt through the handle in the release position. On all sizes a Padlock can be added to secure the handle in position, preventing unwanted movement of the ball.

Ball Support

For larger valve sizes, Flow-Tek's unique trunnion-type mounting supports the ball. This support maintains a constant seat profile, preventing seat damage and blow-by. The results are less seat wear, lower torque and a longer service life. The Flow-Tek ball support dramatically improves valve performance at a much lower cost than traditional trunnion mounting. This feature is standard on 10" - 12" Model F15 and 6" - 12" Model F30 valves.


N/A Bray