Valves - Pressure Controls - Unloading Valve - Integrated Check

UPCV10-F41

PRESSURE UNLOADING VALVE

Overview

Description

The UPCV10-F41 is a screw in, cartridge style, internally piloted, pilot unloading valve with an internal check valve with fixed reload pressure ratio of 80% for use in accumulator type hydraulic systems

Operation

In its steady state, the UPCV10-F41 blocks flow from port 3 to port 4 and allows flow from port 1 to port 2. On attainment of a predetermined pressure at port 2 and 3, the spool shifts to allow free flow from port 3 to port 4, unloading the port 3 pilot. If pressure at port 2 drops to a level below the ratio established reload value, the valve will close, blocking flow from port 3 to port 4. The spring chamber is vented to port 4

Features

  • Internal check valve
  • Optional fixed reload pressure ratios.
  • Hardened precision spool and cage for long life.
  • Choice of seal options.

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
Maximum 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

Properties

Cartridge weight
0.28 kg (0.61 lb)
Internal wetted surface area
251 cm² (38.9 in²)

Performance

UPCV10-F41_Flow-Pressure

Dimensions

UPCV10-F41_Dim

Materials

Materials

Cartridge: Weight: 0.28 kg (0.61 lbs) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings and polyester elastomer back-ups standard.

Installation Specifications

Cavity
Hvc10-f4
Cartridge installation torque
44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK10-F4N-BMM Buna N
SK10-F4V-BMM Fluorocarbon
SK10-F4P-BMM Polyurethane
SK10-F4U-BOO Urethane

Order code

UPCV10-F41_Order