Sv20 Pilot Operated Check Valve

- 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).

- 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).

Airless Spray Gun
This process occurs when paint is applied to an object through the use of an air-pressurized Spray Gun. The Sprayer Gun has a nozzle, paint basin, and air compressor. When the trigger is pressed the paint mixes with the compressed air stream and is released in a fine spray.


Types of nozzles and sprays
Due to a wide range of nozzle shapes and sizes, the consistency of the paint can be varied. The shape of the workpiece and the desired paint consistency and pattern are important factors when choosing a nozzle. The three most common nozzles are the full cone, hollow cone, and flat stream.There are two types of air-gun spraying processes. In a manual operation method the air-gun sprayer is held by a skilled operator, about 6 to 10 inches (15–25 cm) from the object, and moved back and forth over the surface, each stroke overlapping the previous to ensure a continuous coat.In an automatic process the gun head is attached to a mounting block and delivers the stream of paint from that position. The object being painted is usually placed on rollers or a turntable to ensure overall equal coverage of all sides.

Airless Spray Gun

Airless Spray Gun,Airless Paint Spray Gun,Paint Spray Gun,Spray Gun

Fuzhou HVBAN Mechanical Equipment Co., Ltd. , https://www.hi-sprayer.com