Hoke 7 Series high performance, bi-directional ball valves exceed 50,000 cycles* with zero leakage**. The 7 Series includes an energized Teflon® stem seal and live loaded seats which require no adjustment over the life of the valve. 2way valves can be configured for unidirectional flow by replacing standard seat rings with opposing curved disc spring seats. 7 Series come standard in 316 stainless steel, and special alloys when requested. A variety of handles and remote actuation packages are available.
Features & Benefits
Energized Teflon® stem seal
Exceeds 50,000 cycles, reducing costs of ownership*
No packing adjustments required, providing operator peace of mind
Low operating torque for ease of operation
Live-loaded seats
Compensate for wear and temperature cycling with zero leakage, providing excelling durability and reliability.**
Ensure leak-tight performance over entire pressure range simplifying ball valve specifi cation and installation, saving time and expense.
Optional vented ball equalizes pressure between ball orifice and center body cavity
Static-grounded stem
Prevents static discharge for added safety
Quarter turn handle provides a visual indication of on/off valve position, improving safety
Stem flats provide visual indication of valve position, improving safety
Bottom-loaded stem prevents stem blowout for added safety
Optional trip-proof or latching / locking handle prevents accidental opening or closing of the valve for greater security and safety
Fully encapsulated bolts are protected from the environment, extending valve life and reducing costs
Valves are designed, manufactured and tested in compliance with: ANSI/ASME B16.34 (valves: flanged, threaded, and welding end†), API 608 (metal ball valves: flanged, threaded and welding end), API 598 (valve inspection and test), and MSS SP-99 (instrument valves)
Industry standards ensure reliability and integrity of components and systems
Top-mount actuators and brackets are designed and manufactured in compliance with ISO 5211 (industrial valve: part-turn actuator attachment)
Allow HOKE 7 Series to easily interchange with a wide variety of pneumatic actuators
Allow user to easily convert manual valve to pneumatic operation in the field
Special High Tolerance NPT Thread
Technical Data
Body Material
316 stainless steel
Cycle Life
Exceeds 50,000
Maximum Operating Pressure
2500 psig @ 70° F [172 bar @ 21° C]
Operating Temperature Range
−65° to +500° F [−29° to +232° C]
Orifice
0.19 to 0.81 inch [4.8 to 6mm]
Cv Factors
1.0 to 38
* For best results, use a filter upstream of the valve. Dirty, erosive, and corrosive fluids may affect the cycle life of the valves. Cycle life is based on working pressures less than 150 psig.
** Zero leakage per API 598.
† When B16.34 (option B) is selected, testing is conducted in accordance with these specifications.