Brochure

96 63-8702
D146 Differential Pressure Regulators
The differential pressure regulator eliminates excessive pump head
pressure, when most radiator valves are closed due to reduced
demand, by controling flow through a bypass line when the difference
between supply/return exceeds the setpoint.
• 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.
Valve Type: Pressure Regulating Valve
Connection Type: Angle type, female threaded NPT
Materials (Body): Brass (body), Stainless steel and engineered
thermoplastics. EPDM diaphragm.
Outlet Pressure Adjustment Range (psi): 0-17 psi
Max. Inlet Pressure Rating (psi): 85 Psi
Operating Temperature Range: 230°F Maximum (110°C Maximum)
D146 Capacities
10
14 TURNS
12
10
8
6
4
2
MINIMUM
(FULL CCW)
5
0
CAPACITY (GPM)
DIFFERENTIAL PSI (WATER)
0
510
15
15
20
SIZE: 3/4 IN.
10
21 TURNS
20
18
16
14
12
10
8
6
4
2
5
0
CAPACITY (GPM)
DIFFERENTIAL PSI (WATER)
M3180A
0
510
15
15
20
SIZE: 1-1/4 IN.
20
25 30
35
40
45 50
MINIMUM
(FULL CCW)
Material Number Pipe Size (inch) Pipe Size (DN) Capacity Approximate, Dimensions Description Includes
D146M1032 3/4 in. DN20 120,000 Btu/hr;
18 gpm
6 1/4 in. high x 3 3/8 in. wide
(160 mm high x 86 mm wide)
Differential Pressure Regulator,
3/4 in.
Built-in differential pressure
indicator
D146M1040 1 1/4 in. DN32 395,000 Btu/hr;
50 gpm
8 1/2 in. high x 4 1/4 in. wide
(213 mm high x 109 mm wide)
Differential Pressure Regulator,
1 1/4in.
Built-in differential pressure
indicator
Differential Pressure Regulators