Item # 7644G6Y, Selectomite® 76 Series 3-Way Trunnion Ball Valves On Circle Valve Technologies Inc.

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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.

Unit of Measure

Specifications | Typical Applications | Features & Benefits | Materials of Construction

Specifications

Series	N/A 7644
Type	N/A Ball Valve
Body Style	N/A 3-Way
Body Material	N/A 316 Stainless Steel
Seat Material	N/A Nylatron®
Seat Washer Material	N/A Viton®
Inlet	N/A 3/8" Gyrolok®
Outlet	N/A 3/8" Gyrolok®
Max. Operating Pressure	N/A 6000 psig414 bar
Operating Temperature	N/A 0 to 250 ºF-18 to 121 ºC
Orifice Size	N/A 0.187 in4.7 mm
Flow Coefficient (Cv)	N/A 0.56
Panel Hole Dia.	N/A 57/64 in22.6 mm
Max. Panel Thickness	N/A 3/16 in4.8 mm

Typical Applications

N/A

Compressed natural gas dispensing
Instrument air lines
Sampling systems
2-way gauge readout of line pressure
Down hole control systems on offshore drilling platforms

Features & Benefits

N/A

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.

Materials of Construction

N/A

	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.