Post Offer Free
Ningbo Power Hydraulic Motor Co., Ltd.
Ningbo Power Hydraulic Motor Co., Ltd.  

Gold Index: 20032

You are here: home  > Hydraulic valve  > Check valve  > Pilot operated check valve 4 Fixing holes

Pilot operated check valve 4 Fixing holes 

Payment Terms: T/T,L/C,WU, 
Place of Origin: Zhejiang, China (Mainland) 
inquire skype
Add to My Favorites
HiSupplier Escrow
Share |

Product Detail

Model No.: SV20-30B
Production Capacity: 10000pc/month
Delivery Date: 20days
Standard or Nonstandard: Standard
Structure: Check
Temperature of Media: Normal Temperature
Brand Name: POWER
Viscosity range: 2.8~500mm²/s
Means of Transport: Ocean,Land,
Packing: Carton
Power: Hydraulic
Pressure: High Pressure
Material: Stainless Steel
Media: Oil
Weight: 4.0kg
Operating pressure: up to 31.5Mpa

Check valve controlled by fluid
For subplate mounting, Mounting pattern to DIN 24 340
Subplate or screw threaded connection

Features:
- Check valve controlled by fluid
- For subplate mounting, Mounting pattern to DIN 24 340
-Subplate or screw threaded connection
-With or without leakage port
-With or without pre-opening
-Type with pre-openin9, dampened decompression
-3 opening pressures

Functional description, section

SV and SL valves are hydraulic pilot operated check valves in poppet type design which may be opened to allow flow in either direction.
These valves are used for the isolation of operating circuits under pressure, as safeguard against the lowering of a load when a line break occurs or against 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 pre-opening, as poppet valve (5), optionally.
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. Now the valve may also have a flow from B to A
In order to ensure the proper opening of the valve via the control piston(4)a certain minimum control pressure is necessary.
Pilot operated check valve type SV/SL...30B
Type SV..A.. and SL..A.. (with pre-opening, section 1)
This valve has a additional pre-opening. Through pressure connection at control port X the control piston (4) is pushed to the right.
This first pushes the poppet (5) and then the poppet (2) 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. Through this possible pressure shocks are avoided.
Pilot operated check valve type SV/SL...30B
Type SL-.. (with leakage port, section 2)
The function of this valve is principally the same as the valve SV. The difference is the additional leakage port Y. With this the annulus area of the control piston (4) is separated from port A. The pressure present at port A only effects area A4 of the control piston (4).
Pilot operated check valve type SV/SL...30B
Ordering details

Pilot operated check valve type SV/SL...30B

Technical data

Type
SV10
SL10
SV15\20
SL15\20
SV25\30
SL25\30
Control volume-port Y
2.2
8.7
17.5
Control volume-port X
-
1.9
-
7.7
-
15.8
Direction of flow
From A to B freely, from B to A when pilot operated
Max. operating pressure
To 31.5
Control pressure
0.5~31.5
Pressure Fluid
Mineral oil or Phospate ester
Temperature range      ℃
-30~+80
Viscosity range        mm²/s
2.8~500
Weight                kg
SV10
SL10
SV15\20
SL15\20
SV25\30
SL25\30
2.5
4.0
4.5
8.0

Unit Dimensions (dimensions in mm)


Threaded Connection Valve
Pilot operated check valve type SV/SL...30B

Pilot operated check valve type SV/SL...30B

Subplate Mounting Valve

Pilot operated check valve type SV/SL...30B
1.Ports A and B                                                                    10.O-ring
2.Port X                                                                                      For port A and B
3.Name plate                                                                              O-ring 15×3 (Size10)
4. 4 Fixing holes with type SV/SL 20 SV/SL 10 valve                      O-ring 24×3 (Size10)
5. 6 fixing holes with type SV/SL 30 valve                                      O-ring 34×3 (Size10)                      
6.Port Y with valve "SL"                                                          11.For port X and Y
   (with type valve "SV"this port is closed)                                       O-ring 10×2.5 (Size10, 20, 30)
7.Fixing pin
8.Valve with cracking pressure "1"and"2"(dimension L2)
9.Valve with cracking pressure "3"(dimension L3)
Pilot operated check valve type SV/SL...30B

Pilot operated check valve type SV/SL...30B
Mr. shawn
skype Mr. shawn

Tel: 86-574-87193975
Fax: 86-574-23671688
Mobile: 86- 181 5744 9077
Contact to this supplier

Didn't find what you're looking for? Post Buying Lead or contact HiSupplier Customer Service Center  for help!

Related Search

Find more related products in following catalogs on Hisupplier.com

Related Products

Company Info

Ningbo Power Hydraulic Motor Co., Ltd. [China (Mainland)]


Business Type:Manufacturer, Trading Company, Agent, Distributor/Wholesaler, Service
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

shawn:   skype

You May Like: