Sv20 Pilot Operated Check Valve

• Customization: Available
• Media: Oil
• Temperature: High Temperature
• Model NO.: SV20PA1-40
• Actuator: Hydraulic
• Connection Form: Tubular
• Type: Pilot Operated
• Material: Cast Iron
• Pressure: High Pressure
• Valve Structure: Pilot Piston Structure
• Power Supply: DC Solenoid Valve
• Usage: Emptying
• Standard: DIN
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Nodular Cast Iron: Qt500
• Transport Package: Carton
• Specification: ISO9001
• Trademark: Power or OEM
• Origin: China
• HS Code: 8481201000
• Production Capacity: 10000PCS/M

Product Description

1. Product Description
- For sub-plate mounting,

   porting pattern to DIN 24 340 Form A,

   ISO 5781 and CETOP-RP 121 H,

- For threaded connection

- With or without drain port

- With or without unloading function

- 4 cracking pressures
 

SV and SL valves are hydraulic pilot operated check valves in poppet type design which may be 

opened to permit reverse flow.

These valves are used for the isolation of operating circuits under pressure, to prevent a load from falling or  creeping movements of hydraulically locked-in actuators.

Basically these valves consist of housing (1), poppet (2),compression spring (3), control spool (4) as well as a optional pre-opening ball poppet valve (5).

Type SV (without drain port)The valve enables free flow from A to B, in the 

counter direction the poppet (2) is held on its seat by the system pressure, additionally to the spring 

force. Through the pressure connection at control port X the control piston (4) is moved to the right. 

This pushes the poppet (2) from the seat, then fluid flows from B to A.

Function and configuration

In order to ensure the proper opening of the valve via the control piston (4) a certain minimum control pressure is necessary.

Type SV...A...and SL...A... (with pre-opening)   

This valve has a additional pre-opening see hereinafter left configuration. Through pressure 

connection at control port X the control piston (4) is pushed to the right. The ball poppet(5.1) leaves 

first  then the poppet (2) leaves from the seat. 

Now the valve may also have a flow from B to A.
Because of the pre-opening there is a dampened decompression of the fluid under pressure to 

avoid possible pressure shocks.

Type SL... (with drain port )

The function of this valve is principally the same as the valve SV  hereinafter right configuration.

The difference is the additional leakage port Y. 

The annulus area of the control piston (4) is separated from port A. The pressure at port A only 

effects area A4 (9) of the control piston (4).

2. Product Photos

3. Company Profile

      NNINGBO POWER HYDRAULIC MOTOR CO.,LTD is a wel-trusted manufacturer in hydraulic industy.
      The company have achieved IS09001:2015 quality system, relying on strong technology development and production capacity,our annual output 600 thousand pieces. We produce all kinds of hydraulic valve, mainly include Rexroth and Yuken series of hydraulic valve products. Our products are widely used in mining, engineering, construction, plastics, chemicals, machine tools and so on. Our goal is to continue to deliver cost-effective products and more improved electro-hydraulic technology solutions.
     We also aim to help our customer to attain competitive advantage. It is our business to create more solutions, not just to satisfy the needs of our customers but also to help them progress in the industry.
     

4. Certificates

5. Factory

6. FAQ

Q1: Are you trading company or manufacturer ?

A: We are factory.

Q2: How long is your delivery time?

A: Generally it is 3-5 days if the goods are in stock, or it is 20-30 days if the goods are not in stock, it is according to quantity.

Q3: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q4: What is your terms of payment ?

A: Payment<=5000USD, 100% in advance. Payment>=5000USD, 30% T/T in advance ,balance before shippment. If you have another question, pls feel free to contact us.