1-1/4" Differential Pressure Regulator
D146M1040 1-1/4" Differential Pressure Regulator



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- Install between supply and return sides of a hydronic system to stabilize pressure differential and reduce the effects of demand changes.
- Control maintains a constant differential between the two sides by opening a bypass whenever the difference between supply and return reaches the setpoint.
- Provides silent, trouble-free service.
- Easy installation; requires no electrical hookup.
- Easy adjustment of pressure by turning regulating cap.
- Built-in differential pressure indicator.
- Brass valve body with thermoplastic and stainless steel parts.
- Diaphragm of EPDM.
- Description: Differential Pressure Regulator, 3/4 in.
- Pipe Size (inch): 1 1/4 in.
- Pipe Size (DN): DN20
- Pipe Connections: Angle type, female threaded NPT
- Outlet Pressure Adjustment Range (psi): 0-17 psi
- Max. Inlet Pressure Rating (psi): 85 Psi
- Materials: Brass (body), Stainless steel and engineered thermoplastics. EPDM diaphragm.
- Dimensions (in.): 6 1/4 in. high x 3 3/8 in. wide
- Dimensions (mm): 160 mm high x 86 mm wide
- Capacity: 395,000 Btu/hr
- Capacity: 18 gpm
- Temperature Range (F): 230 F
- Temperature Range (C): 110 C
- Includes: Built-in differential pressure indicator
Size: |
1-1/4" |
Outlet Type: |
FNPT |
Inlet Type: |
FNPT |
Pressure Range: |
0 to 17 PSI |
Min Pressure (PSI): |
0 |
Max Pressure (PSI): |
17 |
Material: |
Brass |
Application: |
Heating |
Max Inlet Pressure: |
85 PSI |
Temperature Range (F): |
230°F |
Connection Type: |
Threaded |
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