Leak-Tight Shutoff Regardless of Direction of Applied Pressure

Self Compensating Valve Stem Seal Design Ensures Long, Leak-Tight Maintenance Free Service

Bubble Tight Closure - Each Valve is Bubble Tested to Provide Leak-Free Service as Installed

Full Thread Length Compliance with ANSI B1.20.1 Specification Allows More Flexibility in L1 (hand) and L3 (wrench) Pipe Makeup for Handle Orientation and or Positive Sealing with Lesser Quality Mating Pipe Threads

Machined not Molded Reinforced Telfon® (PTFE) Seats and Stem Seal Standard For Uniform Operating Torque and Long Life.

BSPT Threads Available At No Additional Cost

The Gemini Model 309 is a 90° (quarter-turn) 3-port ball valve designed to maintain bubble-tight performance throughout its pressure-temperature range when used as a diverter or as a selector valve. Diverter service directs a fluid from a common port to either of two discharge ports. Selector service provides a common output port for two distinct input ports. It should be noted that two of the three ports are either fully or partially open as the valve is rotated and, therefore, has no fully 'closed' (zero flow) position.

FLOW DIAGRAM

The Gemini 309 utilizes a unique 'floating' seat backed a Viton® seal which enables the seat to seek the optimum sealing position with relation to the multi-ported ball. The two part design provides compensation for ball seat wear and assures low, consistent operating torque to further extend service life.

In addition to its unique 3-port features, the Model 309 incorporates the premium features found in Gemini 2-way valves such as metal-to-metal body joints, precision machined components and self-compensating stem seal design.

The Model 309 is produced in carbon steel and CF8M (316) stainless steel in 1/2" and 3/4" s female NPT or BSPT pipe threads. The valve can be operated with manual handle or can be configured with any of our standard barstock valve electric or pneumatic actuators.