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power unit fittings direct acting relief valve

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Payment Type: L/C,T/T,D/P,D/A,Paypal
Incoterm: FOB,CFR,EXW,FCA,DDP,Express Delivery
Min. Order: 1 Piece/Pieces
Transportation: Ocean,Land,Air,Express
Port: shanghai,guangdong,zhejiang

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Hydraulic power unit

Description

Packaging & Delivery

Selling Units:	Piece/Pieces
Package Type:	carton

Supply Ability & Additional Information

Packaging: carton

Productivity: 10000pcs/month

Transportation: Ocean,Land,Air,Express

Place of Origin: jiangsu china

Supply Ability: 10000pcs/month

Port: shanghai,guangdong,zhejiang

Payment Type: L/C,T/T,D/P,D/A,Paypal

Incoterm: FOB,CFR,EXW,FCA,DDP,Express Delivery

Product Description

Direct acting relief valve is a pressure control valve commonly used in hydraulic system, which is mainly used to limit system pressure and protect Hydraulic Components from the impact of transient pressure. Its basic structure includes a valve body, a valve core, a pressure regulating spring and a pressure regulating screw. Under normal conditions, the spool is close to the seat under the action of the pressure regulating spring, thus blocking the channel between the oil inlet and the oil outlet, that is, the relief valve is in a normally closed state. When the pressure of the oil inlet exceeds the set pressure of the relief valve, the valve core is pushed away by the hydraulic oil, and the oil flows back to the tank from the relief port, so as to achieve the role of the overflow pressure regulation. By adjusting the pre-compression amount of the spring, the overflow pressure value of the relief valve can be adjusted 1 4.

The spool structure of the direct acting relief valve mainly has two forms: seat valve and slide valve. Seat valve structure is divided into ball valve and cone valve two kinds; The slide valve structure includes a slide valve, a slide valve with a damping hole and a differential slide valve. The relief valves of these structures have different characteristics, such as the cone valve type structure has good sealing, but the contact gravity between the valve core and the seat is large, which is often used in high pressure situations. The slide valve spool is used more, but its leakage is larger 1.

The characteristics of the direct-acting relief valve include simple structure and high sensitivity, but it is not suitable for working under high pressure and large flow. They are usually used in safety valves or situations where the accuracy of pressure regulation is not required. When selecting a direct-acting relief valve, it is necessary to consider the specific needs of the system, such as pressure range, flow requirements, etc. 3 4.

For example, the direct-acting relief valve provided by Hengli Hydraulic has a variety of connections and pressure levels, which are suitable for different application scenarios. They are available in plug-in, threaded and plate-mounted connections, as well as in different operating pressure and flow ranges 2.

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