HYDRAFORCE
5621821.18.75
$168.25 USD
- HYDRAFORCE
- Material:5621821.18.75
- Model:UPCV10-F41A-0-N-80-30/18.75
- Summary:PRESSURE UNLOADING VALVE
Quantity in stock: 0
The Hydraforce 5621821.18.75 (5621821.18.75) is a screw-in, cartridge-style, internally piloted pilot unloading valve designed specifically for accumulator-type hydraulic systems. Known as the UPCV10-F41, this valve includes an internal check valve and features a fixed reload pressure ratio of 80%. In operation, the UPCV10-F41 initially blocks flow from port 3 to port 4 while permitting flow from port 1 to port 2. Upon reaching a predetermined pressure at ports 2 and 3, the spool shifts to facilitate free flow from port 3 to port 4, effectively unloading the pilot at port 3. Should the pressure at port 2 fall below the established reload value ratio, the valve will close and block flow from port 3 to port 4. The spring chamber of this valve is vented to port 4 for optimal performance. Additional features include an internal check valve and optional fixed reload pressure ratios, contributing to its versatility in various applications. The hardened precision spool and cage ensure long-lasting durability, while a choice of seal options allows for customization based on specific system requirements.
Unit weight:
0.28 kg (0.61 lb)
Internal wetted surface area:
251 cm² (38.9 in²)
Ratings | Pressure Ratings Pressure rating: 206.8 bar (3000 psi) Port 1 206.8 bar (3000 psi) Port 2 206.8 bar (3000 psi) Port 3 103.4 bar (1500 psi) Port 4 Proof pressure: 482.6 bar (7000 psi) Burst pressure: 965.3 bar (14000 psi) Pressure setting: 41.4 to 206.8 bar (600 to 3000 psi) Loading and unloading pressure ratio: Specified ratio ±5% Flow Ratings Flow rating: 0.8 to 7.6 lpm (0.2 to 2 gpm) Port 3 to 4 1.9 lpm (0.5 gpm) Factory recommendation 45.4 lpm (12 gpm) Port 1 to 2 Temperature Ratings Operating fluid temperature: -40 to 100 °C (-40 to 212 °F) With buna N seals -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals -54 to 107 °C (-65 to 225 °F) With polyurethane seals -54 to 107 °C (-65 to 225 °F) With urethane seals Storage temperature: -40 to 70 °C (-40 to 160 °F) Ambient temperature: -40 to 70 °C (-40 to 160 °F) Other Ratings Corrosion protection: 960 hr salt spray per astmb117 |
Operating Parameters | Fluids:
Mineral based or synthetic with lubricating properties Fluid viscosity range: 7.4 to 420 cSt Maximum operating contamination level: 18/16/13 per ISO 4406 |
Performance | |
Installation Specifications | Cavity:
HVC10-f4 10-size-4-way Cavities Cartridge installation torque: 44.7 to 50.2 N-m (33 to 37 ft-lb) Orientation restriction: None |
Order Code | POSITION CODE DESCRIPTION UPCV10-F41F-H-J-NR/S F Adjustment Option F A 1/4" Hex Allen Head H Line Body H 8HT Ductile Iron SAE 8 J Seal J N Buna-N J V Fluorocarbon J P Polyurethane J U PPDI Urethane N Ratio N 80 80% Ratio R Spring R 30 41.1 to 206.8 bar (600 to 3000 psi) Spring Range S Pressure Setting S MXXX Spring Setting in XXX bar S XX Spring Setting in XX psi (x 100) |
Seal kit:
SK10-F4N-BMM
Buna N
SK10-F4V-BMM
Fluorocarbon
SK10-F4P-BMM
Polyurethane
SK10-F4U-BOO
Urethane
Seal kit installation instructions
Housings:
Available
10-4w valve bodies
Product PDF File | Download Product PDF File |