172-65400MA-01 (BD2) 21 Apr 2010
14
BD2 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 BD2 valve is in the closed position when the BD2 is shipped from the factory.
Before attempting to operate the BD2, reconfirm that the BD2 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 steam could cause burns.
2. Remain in the area the entire time the BD2 valve is in the open position. Before
opening the BD2 valve, grip the BD2 valve seat with a wrench and hold firmly in
place so that it will not rotate when the BD2 valve is loosened. Grip the BD2 valve
with another wrench and slowly loosen. Condensate and steam will discharge from
the blow outlet in a jet stream. Be careful not to loosen the BD2 valve so far that it
becomes removed from the BD2 valve seat. (If the grooved pin becomes damaged,
large quantities of steam will be discharged in a jet stream.)
3. Close the BD2 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.
Tightening Torques and Distance Across Flats
Torque
Distance Across Flats
Part
N·m (lbf·ft) mm
(in)
BD2 Valve
30
(22)
17
(
21
/
32
)
(
1 N
⋅
m
≈
10 kg
⋅
cm)
Note:
Avoid the use of excessive tightening torques, as threaded parts may
become damaged.
