1. Normally closed intake valve, controls pressure input, and opens the intake valve;
2. The entire intake valve adopts a heavy hammer check structure, with small pressure loss and no water spraying during emergency shutdown conditions;
3. The intake valve body and cylinder body are made of stainless steel material, which is resistant to oxidation and corrosion;
4. The loading and unloading control solenoid valve and relief valve (SDV4) need to be ordered separately.