Circle Valve Technologies Inc.
1533 Gehman Road
Harleysville, PA 19438
Toll Free: 800-645-6733 | Phone: 267-933-6300 | Fax: 267-933-6305|
email: [email protected] 
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Item # 7644G4Y, Selectomite® 76 Series 3-Way Trunnion Ball Valves
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List Price QUOTE
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Developed for high pressure, side-loading applications, the 316 stainless steel trunnion is supported and held securely in position by two composite bearings. Encapsulated Nylatron® seats provide a positive seal, resulting in leak-tight sealing between all ports to 6000 psig differential, reducing operating torque and increasing cycle life. The handle points to the side port in use; when perpendicular to the side ports, it indicates the shutoff position.
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- Compressed natural gas dispensing
- Instrument air lines
- Sampling systems
- 2-way gauge readout of line pressure
- Down hole control systems on offshore drilling platforms
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- Blowout-proof stem for added safety
- Trunnion design assures leak-tight sealing at full 6000 psig (414 bar) differential pressure for high pressure applications.
- Handle points to port in use or to closed position, providing a visual cue and improved safety.
- Encapsulated dual Nylatron® seats and Viton® stem seals ensure a leak tight seal. This combination provides greater valve reliability.
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| | Description | Material | | 1 | Body | 316 stainless steel | | 2 | Trunnion | 316 stainless steel | | 3 | Stem | 316 stainless steel | | 4 | Stem packing† | Viton® | | 5 | Seats
7644 Series
7654 Series |
Nylatron®
TFE | | 6 | Seat retainers | 316 stainless steel | | 7 | Seat washers† | Viton® | | 8 | Thrust washer | Nylatron® | | 9 | Spacer | 316 stainless steel | | 10 | Belleville washers | 316 stainless steel | | 11 | Bearings | Nylon/TFE | | 12 | Backup ring | TFE | | 13 | End fitting gaskets | TFE | | 14 | Handle | Nylon | | 15 | Panel mounting nut | 316 stainless steel | † Other elastomers are available upon request. Contact your local distributor.
Trunnion Design
While the floating ball is superior in 2-way and many 3-way designs, the trunnion is the preferred choice in 4- and 5-way valves and higher pressure 3-way valves because of the fluid dynamics. The design of the trunnion allows it to be secured in position with composite bearings, assuring a very precise relationship between the trunnion and seats. As a result, trunnion 3-, 4- and 5-way valves have few limitations on pressure ratings.
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