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Vonberg Valve - Pressure Control Valves

Vonberg pressure controls are available in two product types — relief valves and counterbalance valves. Two body styles are available are in-line and threaded cartridge.

Relief valves limit maximum system pressure or maintain a desired pressure within a hydraulic circuit. Relief valves are also available with a free reverse flow option that limits maximum system pressure or allows sequencing of pressures within a circuit. Vonberg manufactures both direct acting and differential area relief valves.

Counterbalance valves allow free flow in one direction, while flow in the opposite direction is controlled by a specified pilot ratio and relief pressure setting. They are intended for motion control and overcenter load holding applications, and are available in either industry standard or t-series cavity designs.

Vonberg 5000 Cartridge Counterbalance Valve - Standard Cavity - Internally Vented

Cartridge-style counterbalance valve used in applications such as motion control and holding over-center loads.

Vonberg 5000 Cartridge Counterbalance Valve - Standard Cavity - Internally Vented

  • Three ports
  • Pilot to open
  • Internally vented
  • Spring chamber
  • Free reverse flow check
  • Adjustable with locking nut
  • Clockwise adjustment to increase relief setting
  • Sealed pilot piston, low internal leakage
  • Quiet, stable operation
  • Industry common cavity
  • Low relief hysteresis
  • Pilot ratios up to 10:1 available (higher pilot ratios may reduce flow capacity)
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Internal leakage: 5 drops/min. Max.
  • Standard crack pressure: 25 PSI
  • Relief adjustment range: 500 - 5000 PSI

Models:

  • 5006
  • 5008
  • 5010
  • 5010s
  • 5012

Vonberg 55T Cartridge Counterbalance Valve - Internally-Vented

An an internally-vented, cartridge- style counterbalance valve with three ports, free reverse flow check, pilot to open used in motion control and over-center load holding.

Vonberg 55T Cartridge Counterbalance Valve Internally-Vented

  • Adjustable with locking nut
  • Clockwise adjustment to increase relief setting
  • Sealed pilot piston, low internal leakage
  • Quiet, stable operation
  • Low relief hysteresis
  • Pilot ratios up to 10:1 available (higher pilot ratios may reduce flow capacity)
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Internal leakage: 5 drops/min. Max.
  • Standard crack pressure: 25 PSI
  • Relief adjustment range: 500 - 5000 PSI

Vonberg 5600 (5610) Cartridge Counterbalance Valve - Standard Cavity - Atmospherically-vented

A cartridgestyle counterbalance valve. Three ports, pilot to open with a spring chamber that vents into the atmosphere. Free reverse flow check. Used in motion control and over-center load holding.

Vonberg 5600 Cartridge Counterbalance Valve, Standard Cavity, Atmospherically-vented

  • Adjustable with locking nut
  • Clockwise adjustment to increase relief setting
  • Sealed pilot piston, low internal leakage
  • Quiet, stable operation
  • Industry common cavity
  • Low relief hysteresis
  • Pilot ratios up to 10:1 available (higher pilot ratios may reduce flow capacity)
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Internal leakage: 5 drops/min. Max.
  • Standard crack pressure: 25 PSI
  • Relief adjustment range: 500 - 5000 PSI

Vonberg 56T Cartridge Counterbalance Valve - Atmospherically-vented

A cartridge counterbalance valve with three ports, pilot to open, atmosphere venting spring chamber and free reverse flow check.

Vonberg 56T Cartridge Counterbalance Valve Atmospherically-vented

  • Adjustable with locking nut
  • Clockwise adjustment to increase relief setting
  • Sealed pilot piston, low internal leakage
  • Quiet, stable operation
  • Low relief hysteresis
  • Pilot ratios up to 10:1 available (higher pilot ratios may reduce flow capacity)
  • Operating pressure: 5000 PSI
  • Temperature range:250°f to -40°f
  • Relief tolerance: +/- 10%
  • Internal leakage: 5 drops/min. Max.
  • Standard crack pressure: 25 PSI
  • Relief adjustment range: 500 - 5000 PSI

Models:

  • 56T11
  • 56T2

Vonberg 56TC Cartridge Counterbalance Valve - Atmospherically-vented - CCW

Counterbalance cartridge valve, pilot to open, three port, with atmosphere venting spring chamber and free reverse flow check.

Vonberg 56TC Cartridge Counterbalance Valve, Atmospherically-vented, counterclockwise

  • Adjustable with locking nut
  • Counterclockwise adjustment to increase relief setting
  • Sealed pilot piston, low internal leakage
  • Quiet, stable operation
  • Low relief hysteresis
  • Pilot ratios up to 10:1 available
  • Operating pressure: 5000 psi
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Internal leakage: 5 drops/min. max.
  • Standard crack pressure: 25 psi
  • Relief adjustment range: 500 - 5000 psi

Vonberg 49023 Inline Relief Valve - Differentail Area - Female SAE Ports - Free Reverse Flow

An in-line, differential area relief valve with female SAE ports and free reverse flow. Limits maximum system pressure or allows sequencing of pressures within a hydraulic circuit.

Vonberg 49023 Inline Relief Valve, differentail Area, Female SAE Ports, Free Reverse Flow

  • Aluminum body, steel internals
  • Low internal leakage
  • Internal packing - BUNA-N nitrile rubber
  • Low pressure drop
  • Operating pressure: 3000 PSI
  • 5-10 PSI crack pressure
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10% (+/- 20% below 150 PSI)

Vonberg 49040 Inline Relief Valve - Differentail Area - Female SAE Ports - Free Reverse Flow

In-line relief valve with female SAE ports, differential area and free reverse flow, limiting maximum system pressure or allowing sequencing of pressures within a hydraulic circuit.

Vonberg 49040 Inline Relief Valve, Differentail Area, Female SAE PortsFree Reverse Flow

  • Aluminum body, steel internals
  • Low internal leakage
  • Internal packing - BUNA-N nitrile rubber
  • Low pressure drop
  • 5-10 PSI crack pressure
  • Operating pressure: 3000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10% (+/- 20% below 150 PSI)
  • Relief valve - direct acting

Vonberg 40300-100 Inline Relief Valve - Direct-acting - Female NPTF Ports

In-line, direct-acting relief valve with female NPTF ports. Limits maximum system pressure or maintains desired pressure within a hydraulic circuit.

Vonberg 40300-100 Inline Relief Valve, Direct-acting with female NPTF Ports

  • Steel components
  • Chrome steel ball / hardened seat
  • Low internal leakage
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Models:

  • 40300-102
  • 40300-104

Vonberg 40300-200 Inline Relief Valve - Direct-acting - Female SAE Ports

Female SAE ported inline relief valve. Limits maximum system pressure or maintains desired pressure within a circuit.

Vonberg 40300-200 Inline Relief Valve, Direct-acting, Female SAE Ports

  • Steel components
  • Chrome steel ball / hardened seat
  • Low internal leakage
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Models:

  • 40300-204
  • 40300-206
  • 40300-208

Vonberg 40300-500 Inline Relief Valve - Direct-acting - Male NPTF to Female NPTF

An in-line, direct acting relief valve that limits maximum system pressure or maintains a desired pressure within a circuit. Male NPTF to female NPTF ports.

Vonberg 40300-500 Inline Relief Valve, Direct-acting, Male NPTF to Female NPTF

  • Steel components
  • Chrome steel ball / hardened seat
  • Low internal leakage
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Models:

  • 40300-502
  • 40300-503
  • 40300-504

Vonberg 40300-600 Inline Relief Valve - Direct-acting - Male JIC to Female SAE

An in-line, direct acting relief valve with male JIC to female SAE ports that limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 40300-600 Inline Relief Valve, Direct-acting, Male JIC to Female SAE

  • Steel components
  • Chrome ball / hardened seat
  • Low internal leakage
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Models:

  • 40300-604
  • 40300-606
  • 40300-608

Vonberg 40300-800 Inline Relief Valve - Direct-acting - Male SAE to Female SAE

An in-line, male SAE to female SAE connected, direct-acting relief valve that limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 40300-800 Inline Relief Valve, Direct-acting, Male SAE to Female SAE

  • Steel components
  • Chrome ball / hardened seat
  • Low internal leakage
  • 5-10 PSI crack pressure
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Models:

  • 40300-804
  • 40300-806
  • 40300-808

Vonberg 40310-600 Inline Relief Valve - Direct-acting - Male JIC to Male SAE

An in-line, direct acting relief valve with that limits maximum system pressure or maintains a desired pressure within a circuit. Flow from port 1 to port 2 is blocked until the specified relief pressure setting has been exceeded. Flow from port 2 to port 1 is always blocked.

Vonberg 40310-600 Inline Relief Valve, Direct-acting, Male JIC to Male SAE

  • Steel components
  • Chrome ball / hardened seat
  • Low internal leakage
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Model 40310-608

Vonberg 40330-600 Inline Relief Valve - Direct-acting - Male JIC Connections

A male JIC to male JIC in-line direct-acting relief valve that limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 40330-600 Inline Relief Valve, Direct-acting, Male JIC Connections

  • Steel components
  • Chrome ball / hardened seat
  • Low internal leakage
  • 5-10 PSI crack pressure
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Vonberg 40330-800 Inline Relief Valve - Direct-acting - Male SAE to Male JIC

An in-line, direct acting relief valve with male JIC to male SAE ports. Limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 40330-800 Inline Relief Valve, Direct-acting, Male SAE to Male JIC

  • Steel components
  • Chrome ball / hardened seat
  • Low internal leakage
  • 5-10 PSI crack pressure
  • Operating pressure: 5000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Vonberg 4400 Cartridge Relief Valve - Direct-acting - Non-adjustable

A non-adjustable cartridge relief valve. Limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 4400 Non-adjustable Cartridge Relief Valve, Direct-acting

  • Steel components
  • Guided poppet
  • Hardened seat
  • Low internal leakage
  • Quiet operation
  • Industry common cavity
  • Operating pressure: 3500 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%
  • Model number 4404

Vonberg 49000-100 Inline Relief Valve - Direct-acting - Female NPTF Ports - Free Reverse Flow

A female NPTF in-line relief valve with free reverse flow. Limits maximum system pressure or allows sequencing of pressures within a circuit.

Vonberg 49000-100 Inline Relief Valve, Direct-acting, Female NPTF Ports, Free Reverse Flow

  • Aluminum body with steel internal components
  • Low internal leakage
  • Internal packing - BUNA-N nitrile rubber
  • Low pressure drop
  • 5-10 PSI crack pressure
  • Operating pressure: 3000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Vonberg 49000-200 Inline Relief Valve - Direct-acting - Female SAE Ports - Free Reverse Flow

An in-line relief valve with female SAE ports and free reverse flow. Limits maximum system pressure or allows sequencing of pressures within a circuit.

Vonberg 49000-200 Inline Relief Valve, Direct-acting, Female SAE Ports, Free Reverse Flow

  • Aluminum body with all steel internal parts
  • Low internal leakage
  • Internal packing - BUNA-N nitrile rubber
  • Low pressure drop
  • 5-10 PSI crack pressure
  • Operating pressure: 3000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Vonberg 49005 Inline Relief Valve - Direct-acting - Female NPTF Ports - Free Reverse Flow

An in-line, direct acting relief valve with female NPTF ports and free reverse flow that limits maximum system pressure or allows sequencing of pressures within a circuit.

Vonberg 49005 Inline Relief Valve, Direct-acting, Female NPTF Ports, Free Reverse Flow

  • Aluminum body, steel internals
  • Low internal leakage
  • Internal packing - BUNA-N nitrile rubber
  • Low pressure drop
  • 5-10 PSI crack pressure
  • Operating pressure: 3000 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%

Vonberg 49045 Cartridge Relief Valve - Direct-acting - Poppet

A cartridge relief valve (poppet type). Limits maximum system pressure or maintains a desired pressure within a circuit.

Vonberg 49045 Cartridge Relief Valve, Direct-acting, Poppet valve

  • Steel components
  • Guided poppet
  • Hardened seat
  • Low internal leakage
  • Quiet operation
  • Industry common cavity
  • Limited adjustability
  • Operating pressure: 3500 PSI
  • Temperature range: 250°f to -40°f
  • Relief tolerance: +/- 10%