在Hauhinco传统与创新是互不分离的。Hauhinco是1908年在德国斯普罗克霍威尔，鲁尔矿业的摇篮成立的。至今，Hauhinco仍旧牢记自己的由来。再过去的100余年间，公司经历了很多组织结构和市场环境的变化，并仍旧不断地推陈出新，为市场带来创新性的产品。这些经验使得Hauhinco在市场中独树一帜。
Hauhinco是一家拥有悠久历史的成功的中型公司。如今，Hauhinco是世界领先的水液压应用领域供应商。我们的高压柱塞泵，阀以及系统被广泛地应用于世界各地的井下煤矿以及工业领域。而我们的员工正是我们成功的关键。
中文 (中国)
The Pressure reducing valve reduces the primary pressure on port P to a previously set secondary pressure in port A. For primary pressures up to 400 (500) bar, reduced pressures can be set between 20 and 350 (480) bar. A hydraulic accumulator (6), which is prefi lled with nitrogen on the gas side, serves as a preload element. The pressure in the hydraulic accumulator (6) is set by opening the adjusting screw (4). Readjustment of the set pressure is possible by releasing the pressure via the adjusting screw (5) into the tank connection (T).
In the basic valve position, pressure medium fl ows through the valve seat (2) from primary side (P) to secondary side (A). The pressure in the hydraulic accumulator (6) acts to surface (F1) of piston (3). The primary pressure acts to surface F2 and F3. As long as the primary pressure is lower than the set pressure, the valve bolt (1) remains open since the surface F1 to F2-F3 are balanced. When the set pressure in the hydraulic accumulator is reached or exceeded, the piston (3) and thus the valve bolt (1) moves and closes the open valve seat. In closed position, the primary pressure acts to surface (4). The surface F3 is just as large as the surface F4 so that the secondary pressure is kept constant by permanently opening and closing the valve bolt (1).
The pressure relief valve (7) prevents an unwanted pressure increase in the event of leaks at the valve seat. The excess pressure is discharged via the tank connection (T).
General | |
| Weight | 15,6kg |
| Installation position | any |
| Ambient temperature | -10 bis 50°C (hydraulic fluids, heed standard requirements) |
| Material Valve parts Material Seals | Stainless steel, bronze NBR, PTFE, PUR |
Hydraulic | |
| Hydraulic pressure connector P | ≤ 500 bar |
| Hydraulic pressure connector A | ≤ 480bar |
| Hydraulic pressure connector T | ≤ 10bar |
| setting range of hydraulic response pressure Pa | 20 – 480 bar |
| control ratio: - pressure reducing function (P-A) - pressure relief function (A-T) | 1:1 1:0,95 |
| direction of flow | P->A |
| max. volume flow | 200 l/min |
| Pressure fluid - Medium - Temperature range - Medium - Quality - min filter fineness | Water, HFA 5 to 40°C see Hauhinco media requirement, water, HFA Filter fineness 100µm |
| Pressure fluid - Medium - Temperature range - Medium - Quality - Viscosity | Mineral oil HLP according to DIN51624-2 5 to 50°C Cleanliness class -/19/16 according to ISO 4406 0,6 bis 100 mm²/s |
| Use of other pressure fl uids on request. | |
Included in the scope of supply | |
| Mounting screws for the valves | |
| Pressure setting according to customer specification | |
| Factory test certificate on request |
| Description | Nominal size | Weight | Max. pressure | Basic position | Voltage | Note | Article number |
|---|---|---|---|---|---|---|---|
| Pressure relief valve D500/30 | DN16 | 15,6kg | 500 | - | - | Setting range 30-480bar Type: Plate-type | 6262090 |
| Pressure relief valve D500/30 | DN16 | 15,6kg | 500 | - | - | Setting range 30-480bar Type: Pipe connection | 6206530 |
