Circle Valve Technologies Inc.
307 Derstine Ave, Suite 204
Lansdale, PA 19446

Toll Free:800-645-6733
Phone: 267-933-6300
Fax: 267-933-6305
Email: [email protected]
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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

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 1/4" Gyrolok®

Outlet

 N/A 1/4" 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.