Valves type SL are pilot operated check valve in seat design that can be opened in blocking direction.
Possible applications of these valves include blocking pressurized working circuits, preventing a load reduction in case of a line break or safeguarding against creep movements of hydraulically locked actuators.
The valves basically consist of a housing , a seat poppet, a compression spring , a control spool as well as of a pre-opening as ball seat valve , which is optional.
For safe opening of the valve via the control spool , a defined minimum pilot pressure is required.










Product description :


Size 10 - 32
Component series 4X
Maximum operating pressure 315 bar
Maximum flow 550 l/min





Feature :


For subplate mounting
Porting pattern according to ISO 5781
Subplates according to data sheet 45062 (separate order)
For threaded connection
Pilot oil return, internal
With or without pre-opening, optional
Version with pre-opening for dampened release (reduction of potential switching shocks)
4 cracking pressures, optional












About Us :


Siedman (Xiamen) Hydraulic Technology Co; Ltd is an professional supplier of hydraulic products, we have our own brand Mannesmann Rexroth, and also provide products of BOSCH-REXROTH. We provide good quality, best service and reasonable price. Our products include Pump, motors, cylinder,valves, manifolds and plates, electronics, Systems, power units, accumulators, filters, oil treatment, oil measurement technology, tools and configurators.
After many years of development, we have established several agents home and abroad, offering comprehensive and advanced hydraulic solution for mechanical and engineering application, industrial automation, renewable energy market etc, we focus on providing products and service that consistently exceed our customers` expectations and meeting regulatory requirements. We deliver top quality product in time and achieve customer satisfaction through continual quality and process improvement. Please feel free to contact us for all your requirement.




http://www.sdm-hyd.com