TLV QS10 Series, Instruction Manual

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Operating Instructions for BD2 Blowdown Valve
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
valve stopper 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 BD2 valve (as in step “2”) to blow out any scale or dirt that may be caught in the
BD2. Re-tighten the BD2 valve until the flow of fluid stops completely.
NOTE: Avoid the use of excessive tightening torques,
as threaded parts may become damaged.
Part Name
Torque
Tightening Torques and Distance Across Flats
Distance Across Flats
BD2 Valve 1
BD2 Valve Seat (Screen Holder) 2 30
100
(22)
(73) 17
30 ( )
( )
N·m (lbf·ft) mm (in)
(1 N·m
≈
10 kg·cm)
32
21
/
16
3
/ 1
English
̶ 15 ̶