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Protection valve for automatic circulating pump

Porous cage bypass, low noise, suitable for medium and low pressure forging valve body, can choose carbon steel or stainless steel material. Standard bypass with non-return function, the maximum working pressure difference to 6MPa. The main road check structure with Venturi flow channel is suitable for complex working conditions. Pressure rating PN16-PN100, caliber DN25-DN500. The manual bypass operation function can be added optionally in case of failure.

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Keywords: Valve

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Detailed introduction

Protection valve for automatic circulating pump
STZDL series automatic circulating pump protection valve is a pump protection device. It automatically pumps centrifugal pumps (especially hot water media) at low load operation when the pump body may be out.
 
Now part of the cavitation damage and instability to protect. Once the pump flow rate is lower than the preset flow rate, the bypass is fully opened to ensure the minimum flow rate required by the pump. Even if the main road is completely
 
Closed, that is, the main road flow is zero, the minimum flow can also be automatically circulated through the bypass. The pressure is reduced by an integrated multi-stage throttling pressure reducing valve in the bypass. STZDL
 
The series has a bypass suitable for medium pressure difference, the pressure difference is up to 6MPa, the specific choice is determined by the factory. Unique L-shaped bypass eliminates noise generated by high-speed flowing media
 
to prevent cavitation.
 
· Porous cage bypass, low noise, suitable for medium and low pressure conditions
Forged valve body, carbon steel or stainless steel can be selected.
· Standard bypass with non-return function, the maximum working pressure difference to 6MPa.
· Main road check structure with Venturi flow channel, adapt to complex working conditions.
Pressure rating PN16-PN100, caliber DN25-DN500.
· Can choose to increase the manual bypass operation function, in case of failure.
 
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