Three-Way Valves
The TW series of three-way valves is designed to fulfill the requirements of ASHRAE standard 15, which states that all vessels over 10 cubic feet of internal volume must have a dual relief valve assembly. The three-way valve is made of nickel plated steel. It is a packed valve design and the
packing can be replaced if necessary. It is imperative that the valve stem be either front-seated or back-seated to insure only one relief valve assembly is active. The TW-14 is made to connect to a standard 1-1/4"-12 Rotolock fitting. A Teflon gasket is supplied with the TW-14.
Features
- Nickel plate steel body
- Nitrogen tested for cleanliness
- 500 psig maximum working pressure
- Temperature rating: -20°F to +300°F
- Suitable for refrigerants and other industrial fluids non-corrosive to brass and steel

| Catalog Number | Inlet | Outlet | Dimensions | ||||
|---|---|---|---|---|---|---|---|
| A | B | C | D | E | |||
| TW-04 | 1/2" MPT | 1/2" FPT | 2.00" | 1.55" | 3.17" | 1.63" | 3.75" |
| TW-06 | 3/4" MPT | 3/4" FPT | 2.00" | 1.55" | 3.42" | 1.88" | 3.75" |
| TW-14 | 1 1/4"–12 Rotolock | 1/2" FPT | 2.00" | 1.55" | 3.17" | 1.63" | 3.75" |
