172-65135MA-01 (P46SR + BO2) 1 Oct 2009
12
Option: With BO2 Blowdown Valve
Configuration
BO2 Blowdown Valve Instructions
The BO2 Blowdown Valve, installed in the screen area, uses the trap’s internal
pressure to blow any condensate, other fluids, dirt or scale from inside the trap out to
atmosphere.
BO2 Blowdown Valve Operation
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
Do not use excessive force when connecting threaded pipes to the
product. Over-tightening may cause breakage leading to fluid
discharge, which may cause burns or other injury.
CAUTION
1. The blow valve is in the closed position when the BO2 is shipped from the factory.
Before attempting to operate the BO2, reconfirm that the blow valve is still in the
closed position. Locate the blow outlet and, during operation, stand to the side
and well clear of it, as the jet of condensate or other fluids could cause burns.
2. Remain in the area the entire time the blow valve is in the open position. Before
opening the blow valve, grip the blow valve seat with a wrench and hold firmly in
place so that it will not rotate when the blow valve is loosened. Grip the blow valve
with another wrench and slowly loosen. Condensate and other fluids will discharge
from the blow outlet in a jet stream. Be careful not to loosen the blow valve so far
that it becomes removed from the blow valve seat. (If the grooved pin becomes
damaged, large quantities of steam will be discharged in a jet stream.)
3. Close the blow valve until the flow of fluid completely stops. If the flow of fluid does
not stop, re-open the valve (as in step 2) to blow out any scale or dirt that may be
caught in the valve. Re-tighten the valve until the flow of fluid stops completely.
(Avoid the use of excessive tightening torques, as threaded parts may become
damaged.)
Tightening Torques and Distance Across Flats
Part
Torque
Distance Across Flats
Blow Valve Seat
40 N·m 29 (lbf·ft)
19 mm (
3
⁄
4
in)
Blow Valve
30 N·m 22 (lbf·ft)
17 mm (
21
⁄
32
in)
1 N·m
≈
10 kg·cm
Blow Outlet
Blow Valve
Blow Valve Seat
Gasket
Grooved Pin
Screen
