Butterfly Valves
Accurately open, close, or regulate your process flow with butterfly valves from SPI that are made in the USA. Made of an entirely stainless-steel construction — with 304 or 316L wetted parts — these valves are available in either tri-clamp or butt-weld connections.
Hand-operated or air-actuated options are available, and the valve seat material comes in Silicone, EPDM, or Viton® options.
Note: This valve is not authorized by 3-A
Features and Options
All stainless steel construction (304/316L wetted parts)
Precision molded seat ensure positive shut-off and long life
Seat material options: Silicone, EPDM, & Viton®
Available with dual proximity switches
Hand operated or air actuated
End connection options: John Perry, Bevel Seat, I-Line*
Specifications
Body Material: 304 or 316L Stainless Steel
Seat Material: Silicone, EPDM, or Viton®
Stem and Disc: 316L
Pressure Rating: 140 PSI Max.
Temperature Range: -80ºF to 400ºF
Handle: Fully open or closed spring loaded assembly (4) position
Hand Operated Valve Dimensions
Dimensional Data
| A (in) | B (in) | C (in) | D (in) | E (in) |
|---|---|---|---|---|
| 1/2 | - | 2.50 | 4.13 | 2.00 |
| 3/4 | - | 2.50 | 4.13 | 2.00 |
| 1 | 1.63 | 2.88 | 4.13 | 2.00 |
| 1.5 | 1.88 | 3.63 | 4.13 | 2.13 |
| 2 | 2.00 | 3.78 | 4.13 | 2.63 |
| 2.5 | 2.13 | 3.94 | 4.13 | 3.06 |
| 3 | 2.44 | 4.06 | 5.69 | 3.25 |
| 4 | 3.16 | 4.61 | 5.69 | 4.00 |
Air Actuated Valve Dimensions
Air to open, spring to close actuator
Position indicator for visual indication (dual micro-switch and proximity-switch indication options available)
Air pressure required: 65-85 PSI
Temperature Range: -20ºF to 200ºF
Dimensional Data
| Size | A (in) | Weight (lbs) |
|---|---|---|
| 1/2 | 8.63 | 9.0 |
| 3/4 | 8.63 | 9.0 |
| 1 | 8.63 | 9.0 |
| 1.50 | 8.63 | 9.0 |
| 2 | 9.00 | 9.5 |
| 2.5 | 9.38 | 10.5 |
| 3 | 9.56 | 13.3 |
| 4 | 10.38 | 16.5 |
*See hand operated valve drawing for face-to-face dimensions.
SP10B-7-Size-20VP Valve Positioner
The 20VP butterfly valve actuator offers the same precise control as our SP160 series control valves at a lower cost. The Valves utilize the same Siemens positioner as the SP160 series valves, using a 3-15 PSI air signal.
Available with all standard butterfly valve options and connection types.
Air Supply Requirements: 3-15 PSI
Supply Air: 90-100 PSI
Contact us for more control indication options.
Part Number Configurator
For more housing options, dimensions, and curves see our butterfly valve data sheet.