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Pressure relief valves

Pressure relief valves prevent system overloads. Depending on the operating pressure, volume flow, viscosity etc., appropriate valve solutions are available for all framework conditions, be it for rapid buffering of pressure peaks or extreme flow-off requirements.

> SPV/SPVF
> HV/HVF
> DBD
> DV B
> D-valve
> T-valve
> Complete overview of the technical data

SPV/SPVF

The SPV/SPVF pressure relief valve is a directly controlled slide valve for installation in pipelines and is used to safeguard low-pressure hydraulic circuits. The line connection can be made using SAE flanges (3000 psi) or Whitworth pipe threads (G).

> Complete overview of the technical data

CHARACTERISTICS

Volume flow
40 … 800 l/min
10.57 … 211 gal/min
Temperature range
-40 … 220 °C / -40 … 428 °F
Nominal pressure
… 30 bar / … 435 psi

DATA SHEET

SPV/SPVF|PDF|EN|09-2021

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HV/HVF

The HV/HVF pressure relief valve is a pilot operated slide valve for installation in pipelines and thus serves to safeguard medium pressure hydraulic circuits up to max. 160 bar (2 321 psi). The pipe connection can be made using SAE flanges (3000 psi) or Whitworth pipe threads (G). Thanks to the spool pilot control, the valve can also be used for higher viscosities.

> Complete overview of the technical data

CHARACTERISTICS

Volume flow
50 … 350 l/min
13.21 … 92 gal/min
Temperature range
-20 … 80 °C / -4 … 176 °F
Nominal pressure
… 160 bar / … 2 321 psi

DATA SHEET

HV/HVF|PDF|EN|11-2015

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DBD

The DBD pressure relief valve is a directly controlled poppet valve for installation in pipelines or as a cartridge valve. The valve is used for pressure protection of hydraulic systems up to p_max = 400 bar (5 802 psi). The housing has two connections with Whitworth pipe threads for pipe mounting. Without the housing, the valve cartridge can also be screwed into the specified bore contour in any body instead.

> Complete overview of the technical data

CHARACTERISTICS

Volume flow
… 200 l/min
… 53 gal/min
Temperature range
-20 … 80 °C / -4 … 176 °F
Nominal pressure
… 400 bar / … 5 802 psi

DATA SHEET

DBD|PDF|EN|10-2013

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DV B

The DV B pressure relief valves is a hydraulically pilot controlled valves. The control oil can be discharged either internally or externally. As standard, all designs are equipped with a measuring port and a connection for external control oil regulation. Typical applications are oil hydraulics and lubrication technology.

On request, the DV B pressure relief valve is also available with an additional 2/2-directional control valve (e.g. for pressure-minimized circulation).

> Complete overview of the technical data

CHARACTERISTICS

Volume flow
800 … 1 800 l/min
211 … 476 gal/min
Temperature range
-15 … 150 °C / 5 … 302 °F
Nominal pressure
… 210 bar / … 3 046 psi

DATA SHEET

DV|PDF|EN|05-2022

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D-valve

Gear pumps of the KF series can optionally be equipped with a directly controlled pressure relief valve (D-valve D15/D25) to protect the pump from impermissibly high-pressure peaks. The valve has an adjustment facility within the permitted pressure range and is designed for a brief overflow of the discharge flow.

> Complete overview of the technical data

CHARACTERISTICS

Displacement KF pump
2.5 … 630 cm³/rev
Temperature range
-40 … 200 °C / -40 … 392 °F
Nominal pressure
… 25 bar / … 363 psi

DATA SHEET

KF 2.5 … 630|PDF|US|11-2019

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T-valve

The KF gear pumps can be optionally equipped with the T-valve. The T-valve is an attached, directly controlled pressure relief valve with separate tank connection. To dissipate heat, the handled fluid flowing out via the T-valve is fed directly into the storage tank. Thanks to adapted damping, the valve offers very good control characteristics and outstanding dynamics with vibration-free operation at all operating points of the pump.

> Complete overview of the technical data

CHARACTERISTICS

Displacement KF pump
32 … 80 cm³/rev
Temperature range
-40 … 200 °C / -40 … 392 °F
Nominal pressure
… 25 bar / … 363 psi

DATA SHEET

KF 2.5 … 630|PDF|US|11-2019

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TECHNICAL DATA

Series	Nominal sizes	Flow rate l/min / gal/min	Nominal pressure bar / psi	Viscosity cSt	Pressure medium temperature °C / °F	Data sheet	Operating instructions	3D- Modell
SPV/SPVF	10, 20/25, 32/40, 50, 80	max. 800 / 211	… 30 / … 435	1.2 ... 1 000	-40 … 220 / -40 … 428	PDF	PDF	-
HV/HVF	10, 25, 40	max. 350 / 92	… 160 / 2 321	13 ... 600	-20 … 80 / -4 … 176	PDF	PDF	-
DBD	06, 08, 10, 20	max. 200 / 53	… 400 / 5 802	10 ... 600	-20 … 80 / -4 … 176	PDF	PDF	-
DV B	50, 80	max. 1 800 / 476	… 210 / 3 046	4 ... 1 000	-15 … 150 / 5 … 302	PDF	PDF
D-Valve	KF pumps: 2.5 ... 630 cm³/rev		… 25 / 363	1.4 ... 100 000	-40 … 200 / -40 … 392	PDF	-
T-Valve	KF pumps: 32 ... 80 cm³/rev		… 25 / 363	1.4 ... 100 000	-40 … 200 / -40 … 392	PDF	-