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Direct control block FVB-22-25.31
Direct control block FVB-22-25.31
CTH 02.023.00.00.000-X. Y.Z-L-M (*) FHYA250/31.5 & FHYA125/31.5 (according GB/T 25974.3-2010) - China market
The FVB-22-25.31 direct control block is an adjacent control system type without multichannel conduit. It is intended to control and supply directly the connected cylinders (rams) in an adjacent powered roof support unit and to provide specified control functions. 3/2way operating (actuating) cartridges installed in one panel are activated directly by 3/2way control valves. After opening the operating cartridge, the hydraulic medium flows to the specified space of the cylinder (ram). High pressure hoses are installed directly to the operating (actuating) valves. Control pairs are in the vertical plane. The return line of the control valves is protected by a check valve and an overflow valve (depending on the requirements).
| Technical parameters | ||
|---|---|---|
| Number of operating functions | – | 22 |
| Max. flow ratio for DN10 operating cartridge | l/min./MPa | ~400/35 |
| Max. flow ratio for DN12 operating cartridge | l/min./MPa | ~600/35 |
| Max. flow ratio for DN19 operating cartridge | l/min./MPa | ~900/35 |
| Supply and return connections P and T | – | DN25/DN31 |
| Construction version | – | stainless steel |
| Max. working pressure | MPa | 35 |
| Recommended filtration | µm | 40 |
| Approximate weight of the block | kg | ~66,5 |
The direct control block can operate with using HFA fire-resistant fluids (oil-in-water emulsions) with a concentrate content of 0.5–3%, based on mineral and synthetic oils compliant with the PN-C-96047 standard. If other operating fluids (mediums) have to be used, it is required to contact the direct control block manufacturer.
