Install Instructions

Shut-Off
Valve
"Y" Strainer
To Drain
To Return Line
Trap
Gravity Return to
Vented Receiver
Test Valve
Equipment Drain Point
Static
Head
Dirt Pocket
Inlet
Outlet
Shut-Off
Valve
Dirt
Pocket
Drain Plug
Outlet Valve
Supply
Inlet
Valve
Y Strainer
Cover Bolts
Thermostatic
Vent Pipe to
Gravity Return
Line or Drain
Pipe Supports
Support Foot
Inlet
Outlet
Trap
TYPICAL PIPING DIAGRAMS
Supply
Inlet
Valve
Y Strainer
Cover Bolts
Eye Hook
Dirt
Pocket
Pipe Supports
Drain Plug
Outlet Valve
Inlet
Outlet
Series H Trap Draining to Gravity Return Line
Series C and X Pattern Trap Installations
2
1
⁄2" Series C Pattern Trap Installations
• Install a Hoffman Specialty Y-strainer in the pipe,
ahead of the steam trap. This prevents dirt from
entering the trap.
• Install a blow down valve by connecting it to the
strainer drain plug. This allows the Y-strainer to be
cleaned.
• Install a shut-off valve in the inlet pipe and the outlet
pipe. This allows the trap to be isolated when
servicing.
• Install a test valve in the outlet pipe, and cap it. This
allows the trap to be tested. The cap is used as
safety precaution when the unit is not being tested.
• Blow down the piping using full steam pressure for
(5) five minutes. This cleaning process will remove
debris from the pipe and oil from the system.
Test traps by following the “Troubleshooting” procedure
on page 6.
3
To prevent serious personal injury from
steam pipe blow down, connect a temporary
pipe between the steam pipe opening and a
drain, or stand at least 100 ft. (30m) from
the pipe opening.
Failure to follow this warning could cause
property damage, personal injury, or death.
!
WARNING
STEP 2
IMPORTANT: To prevent system damage from water
hammer or sudden shock, open supply valves slowly.
If you are uncertain about the product’s adaptability
for your application, please call the factory or
authorized representative before using the product.
The trap seat rating (stamped on the nameplate) must
be equal to or greater than the maximum pressure
differential across the trap.