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Automatic Flow Control Valve

HG8303 series automatic flow control valve consists of a preset flow control valve and an actuator. It is designed for non-corrosiveliquid flow control in pipelines.

The automatic control valve has pressure balancing function and high sensitivity. It features low noise, enhanced reliability, modular structure design, and is maintenance free. Through the throttling valve and according to the standard drawing, it supports fast and convenient flow adjustment. The automatic flow control valve can also be used for many more control purposes through combining with other functional units.

Nominal diameter DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250mm
Nominal pressure PN16, PN40
Flange standard HG20592-2009, ANSI, JIS, DIN, GB, JB
Valve body material Cast iron, cast steel, cast stainless steel
Valve core material Rigid seal Stainless steel
Flexible seal Rubber ring coated stainless steel
Pressure balancing system Stainless steel bellows (DN15-DN125), balancing diaphragm (DN150-250)
Effective area (m2) 250 630
Flow controller differential pressure ( MPa ) 0.02:0.05
Max. differential pressure between the upper and lower chambers ( MPa ) 0.4 0.15
Material Diaphragm cover: galvanized steel plate
Diaphragm: EPDM or fiber reinforced FKM
Control tube and connectors Copper tube or steel tube 10 x 1;
Ferrule connector R 1/4"
Performance of the Automatic Flow Control Valve
Setting value tolerance ± 8%
Allowable leakage (under standard testing conditions) Rigid seal 4 x0.01% rated valve capacity
Flexible seal DN15-50 DN65-125 DN150-250
10 bubbles / min 20 bubbles / min 40 bubbles / min
Allowable Working Temperature
Nominal diameter 15-125mm 150-250mm
Sealing form Rigid seal ≤ 150 ℃ ≤ 140 ℃
2 chilling tanks ≤ 200 ℃ 2 chilling tanks and extension unit ≤ 200 ℃
Flexible seal ≤ 150 ℃
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