Brochure

Description
Reducing valves fill the system
to a preset pressure for optimum
performance.
Features
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start-up time and labor.
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helps prevent loss of system
pressure if the supply water
drops below system pressure.
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is designed to prevent dirt and
sediment from entering the
system.
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with 1/2” male NPT thread and
1/2” female sweat tail-piece for
fast, flexible system connection.
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is ideal for potable water systems.
VALVES Pressure Reducing Valves
32
ASME Safety Relief Valves
Specifications
Description
ASME Safety Relief Valves
p
rotect fired and unfired hot water
vessels against hazardous operating pressures.
Features
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boiler and pressure code for heating boilers with capacities
certified by the National Board of Boiler and Pressure
Vessel Inspectors.
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today for valves in their class (790,000 to 5,999,000 BTUH)
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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.
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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”
Connection in Inches
Dimensions in Inches (mm)
Approx.
Component
Body
Between
Overall
Shpg. Wt.
Model No.
Part No.
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)
Models ending in TU feature 1/2” sweat/NPT union connection.
NSF/ANSI 372
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weight on wetted surface.