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1/2 Inch Throttle Element Pressure Check Relief Valve High Precision QTYH-15

Categories Air Preparation Units
Brand Name: FLY
Model Number: QTYH-15
Certification: CE
Place of Origin: China
MOQ: 1 piece
Price: Negotiation
Payment Terms: T/T , Western Union
Supply Ability: 1000 pcs
Delivery Time: within 1-30 working days after payment
Packaging Details: Plastic bags,Boxes, Cartons, Pallets,or according to customer's requirement
Model code: QTYH-15
Port size: 1/2nch
Body Material: Aluminum
Name: Pressure Relief Valve
Weight: 0.7kgs
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1/2 Inch Throttle Element Pressure Check Relief Valve High Precision QTYH-15

Safety type QTYH-15 1/2 inch Throttle element pressure relief check valve Pressure Relief Valve​


Pressure relief valve is a valve that can automatically maintain stable outlet pressure by adjusting the inlet pressure to a required outlet pressure and relying on the energy of the medium itself.


The pressure reducing valve is a valve that adjusts the inlet pressure to a certain required outlet pressure and relies on the energy of the medium itself to automatically maintain the outlet pressure. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of decompression. Then, relying on the adjustment of the control and regulation system, the fluctuation of the post-valve pressure is balanced with the spring force, so that the post-valve pressure remains constant within a certain error range.

Ordering Code


The pressure reducing valve adopts the opening degree of the opening and closing member in the control valve body to adjust the flow rate of the medium, reduce the pressure of the medium, and adjust the opening degree of the opening and closing member by the action of the pressure behind the valve, so that the pressure behind the valve is maintained within a certain range. Inside, the cooling water is sprayed into the valve body or behind the valve to lower the temperature of the medium. This type of valve is called a vacuum desuperheating valve.
Pressure relief valve quick and easy automatic selection is included. The valve is characterized by keeping the outlet pressure and temperature within a certain range in the case of constant changes in inlet pressure.


Model code
stainless steel,Aluminum
Port size
1/2 inch
It reduces the high liquid pressure in the front line of the valve to the level required in the back line of the valve.


1. Reduced water waste and rationalized system flow distribution, improved system layout and operating conditions
2.Simple structure and easy disassembly.
3. Reliable quality and low failure rate.

Fault phenomenon: unstable pressure fluctuation

Failure analysis:
1. Air is mixed into the oil. Damping holes are sometimes blocked
3. The roundness of the spool and the valve body exceeds the specified value, causing the valve to become stuck
4. The spring is deformed or stuck in the spool, making the slide move difficult or the spring is too soft
5. The steel ball is not round, the steel ball is not well matched with the valve seat or the poppet valve is not installed correctly.

1. If the products we have in store, we will send it out ASAP after payment.
2. If the products which were customized, we will complete the production within a specified period of time, and send it out the first time, we can promise it.
3. We have a variety of ways to deliver goods, usually DHL, Fedex, TNL will be normal ways, If you require use of a courier, we can do it.
4. Also we can send by your delivery acount if you want.

After-sale service
We can provide a series of after-sale service, such as product introduction, mounting, debugging, technical support and so on.

Serves time
0:00 - 23:59
From Monday to Sunday

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