ARGO-HYTOS SOBD5A-R4
The valve consists of a seat by-pass, relief valve fitted with an auxiliary control with a differential piston and by-pass single-way valve serving for reverse direction of flow. The liquid is flowing through the single-way valve from the channel (2) to the channel (1) with a small pressure drop.| Part No. | SOBD5A-R4 |
|---|---|
| Datasheet | SOBD5A-R4 Download |
| Manufacturer | ARGO-HYTOS |
| Description | Overcentre Valve |
| Buy | Stock & Price |
DESCRIPTION
In the opposite direction the single-way valve on the rear side of which a gate valve seat is fitted is pressed through the action of a spring and the load pressure against the spring-loaded valve gate valve. In this way the valve is nearly closed hermetically. If the pressure in the channel (1) exceeds a set up value of the spring force the gate valve is pressed out of the seat and the overpressure in that case is relieved into channel (2). For ensuring the function of holding the load the spring force should be set up to a value by 30 % higher when compared to an expected pressure exerted by the load. If the load has to be moved it is possible to ensure it with the help of so called auxiliary control from the channel (3) by introducing already certain control pressure. The control pressure is calculated in the following way: Control pressure = set up pressure – load pressure ratio of control The ratio of control designates a ratio of surfaces of the differential slide valve cross-section area and its seat.
