Function and symbolsCheck valve type DSV is made up of two pilot operated check valves with excellent closure.Usually fluid can flow free from V1 to C1 or from V2 to C2 with leakage-free closure in th...
Product Detail
Function and symbols
Check valve type DSV is made up of two pilot operated check valves with excellent closure.
Usually fluid can flow free from V1 to C1 or from V2 to C2 with leakage-free closure in the opposite direction.
When fluid flows from C1 to V1, pressure from V2 pushes the piston (1) to move left and pushes the poppet (2) off the seat to realize reverse flow. In order to make the reliable closure of the poppets, the ports V1 and V2 must be connected to tank when the directional valve is in the central position.
Ordering code
Characteristic curves (Measured at ϑₒᵢ=40℃±5℃, using HLp46)
Technical data
| Weight kg | 2.24 |
| Max.operating pressure bar | 350 |
| Max. cracking pressure bar | 8 |
| Max.flow-rate L/min | 50 |
| Flow direction | See the symbols |
| Free flow cracking pressure bar | See the characteristic curve |
| Area ratio | A1:A2=3.2:1 |
| Fluid temperature range ℃ | -30 to+80 (NBR seal) |
| -20 to +80 (FKM seal) | |
| Fluid | Mineral oil suitable for NBR and FKM seal |
| Phosphate ester for FKM seal | |
| Degree of contamination | Maximum permissible degree of fluid contamination:Class 9. NAS 1638 or 20/18/15, ISO4406 |
Unit dimensions
