Features

The inlet valve and check valve are used together. After water is added to the high-pressure heater, as the water pressure continues to rise, when the pressure reaches a certain level, the pressure differential acting on the cross-section of the inlet valve stem causes the valve stem to move upward, lifting the valve disc and opening the passage to the high-pressure heater, allowing water to enter the high-pressure heater. At this time, the high-pressure heater is put into operation. If an accident occurs in the high-pressure heater and the pipeline ruptures, the water level in the high-pressure heater exceeds the allowable value. The water level signal is transmitted through the electrical device to open the quick-opening and closing valve, allowing condensate to enter the upper piston cylinder of the inlet valve, depressing the piston, pushing the valve downward, closing the high-pressure heater inlet, opening the bypass, and stopping the high-pressure heater. The entire operation takes 2 seconds.

Product standards

1. Design standards: in accordance with JB/T3595-2002, NB/T 47044-2014.

2. Design standard: ASME B16.34-2013

Nominal pressure: PN16-PN420 (900LB-2500LB)

Nominal thread diameter: DN100-DN350 (4″-14″)

Main body material:

1、WCB、ZG20CrMo, Cr5Mo. ZG20CrMoV

2、25#、12Cr1MoV

3、ASTM A216 WCB, ASTM A217 WC6、 ASTM A217 WC9

4. ASTM A105、ASTM A182 F11. ASTM A182 F22

Operating temperature:

1、WCB:-29°C~425°C

2. Alloy steel: -29°C~540°C, -29°C-570°C

Applicable medium: water, steam, etc.

Connection method: welding

Transmission mode: manual, electric, hydraulic