The self-operated regulating valve is a new type of regulating valve. Compared with manual control valve, it has the advantage of automatic regulation; compared with electric control valve, its advantage is that it does not need external power. The application practice has proved that in the closed water circulation system (such as hot water heating system, air conditioning chilled water system), the correct use of this valve can easily realize the flow distribution of the system, realize the dynamic balance of the system, greatly simplify the debugging of the system, and stabilize the working state of the pump, etc.

Main performance indicators

Set value deviation (+8%)
Permissible leakage
(under specified experimental conditions) rated capacity of hard seal 4 x 0.01% valve
Soft-sealed DN15-50 DN65-125 DN150-250
10 bubbles/min 20 bubbles/min 40 bubbles/min

Permissible operating temperature

Nominal diameter 15-125 mm 150-250 mm
Sealing type hard seal < 150 < 140
Cooling tank < 200 C Cooling tank and elongated parts < 200 C
Cooling tank and radiator less than 350 Cooling tank and elongated parts less than 300
Soft seal < 150
Note: indicates the allowable working temperature of the valve, which is effective only when the medium is steam, and the PN40 valve body should be selected to withstand the temperature to 350 C.

Main outline dimensions

Nominal Path (DN) 20 25 32 40 65 80 125 150 200 250 300
Flange nozzle size (B) 383 512 603 862 1023 1380 1800 2000 2200
Flange End Spacing (L) 150 160 180 200 230 290 310 350 400 480 600 730 850