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Part
Number
Model
Number
Part
Number
Model
Number
Description
Reducing valves fill the system
to a preset pressure for optimum
performance.
Features
Fast fill feature reduces
start-up time and labor.
Low inlet pressure check valve
helps prevent loss of system
pressure if the supply water
drops below system pressure.
Convenient cleanable strainer
is designed to prevent dirt and
sediment from entering the
system.
Union
connection available
with 1/2” male NPT
thread and
1/2”
female sweat tail-piece for
fast, flexible system connection.
Lead-Free brass body construction
is ideal for potable water systems.
VALVES Pressure Reducing Valves
32
ASME
Safety Relief
Valves
Model
Number
Body
Specifications
Description
ASME
Safety
Relief Valves
p
rotect fired and unfired hot water
vessels against hazardous operating pressures.
Features
Engineered in accordance with Section IV
of
the ASME
boiler and
pressure
code for heating boilers with capacities
certified by the National Board of Boiler and Pressure
Vessel Inspectors.
Offer the highest BTUH
ratings
available on the market
today for valves in their class (790,000 to 5,999,000 BTUH)
EPDM
diaphragm
operated (cast iron models) and
diaphragm assisted (bronze models) have an effective
area approximately 5 times greater than conventional
“pop-type” relief valves to help overcome the effects of fouling.
Low differential between opening and closing pressures
helps to prevent conditions under which system water
might flash to steam and cause hammering.
Models 3301 &
4100
Iron Body Valves
Nos. 3301 &
4100
Nos. 790 &
1170
Models 790 &
1170
Bronze Body Valves
F-3TU
FB-38
FB-38TU
B-38
B-38TU
Specifications for Pressure Reducing Valve
Specifications for Combination “Dual Units”
PRV's
PRESSURE REDUCING VALVES
Factory
Adjustable
Body
Conncection
Setting
Range
Dimensions in Inches (mm)
Material
Size - Inches
(PSIG) (PSIG) ABCD
B-38 110190 1/2 3 1/16 (78) 4 13/16 (122) 3 11/16 (94)
1 1/8 (29)
B7-12 110196 3/4 NPT 3 (76) 4 31/32 (126) 3 21/32 (93) 1 5/16 (33)
B-38TU 110191 1/2 Union* 12 10 - 25 4 31/32 (126)
FB-38 110192 Brass 1/2 NPT 3 1/16 (78) 4 13/16 (122) 3 11/16 (94) 1 1/8 (29)
FB-38TU 110193 1/2 Union* 4 31/32 (126)
6 110194 1/2 3 1/16 (78)
7 110195 3/4 NPT 45 25 - 60 3 (76) 4 31/32 (126) 3 21/32 (93) 1 5/16 (33)
* Models ending in "TU" feature 1/2" sweat/NPT union connection
COMBINATION "DUAL UNITS"
Connection in Inches
Dimensions in Inches (mm)
Approx.
Component
Body
Between
Overall
Shpg. Wt.
Model
Number
Part
Number
Valves
Material
Boiler Fill
Connections Height
lbs. (Kg)
Relief
8
110199LF
B-38
1/2 NPT 6 7/16 (164) 4 (1.8)
5 3/8 (137)
Relief
F-3
110197LF
FB-38
1/2 NPT
1/2 NPT 6 7/16 (164) 3 3/4 (1.7)
Relief
1/2 Union
F-3TU 110198LF
FB-38TU
Lead-Free
Brass
NPT/Sweat
8 5/8 (219)
6 (152)
4 (1.8)
PRESSURE SETTING:
Relief 30 PSI
Reducing 12 PSI standard; field adustable range: 10 - 25 PSI
Maximum operating temperature 225°F (107°C) - Maximum operating pressure 125 PSIG (862 kPa)
Approx.
Shpg. Wt.
lbs. (Kg)
1 3/4 (0.8)
2 1/4 (1.0)
2 (0.9)
1 3/4 (0.8)
2 (0.9)
1 3/4 (0.8)
2 1/4 (1.0)
Lead-Free Brass meets NSF 372 certification
Model
Number
Part
Number
Models ending in TU feature 1/2” sweat/NPT union connection.
NSF/ANSI 372
*CSA certied to NSF/ANSI 372 that product contains less than 0.25% lead content by
weight on wetted surface.