KRACHT Valve Technology Series

Overview

The KRACHT Valve Technology Series brings together KRACHT GmbH’s complete range of pressure relief valves, the safety and control backbone of hydraulic and lubrication circuits across marine, industrial and mobile equipment applications. Rather than a single valve, the series spans six distinct real product families – SPV/SPVF, HV/HVF, DBD, DV B, the D-valve and the T-valve – each built around a different control mechanism (directly controlled slide, pilot operated slide, directly controlled poppet, or hydraulically pilot controlled) and each rated for a different combination of flow and pressure, from low-pressure circuit protection up to 400 bar. What unifies the family is KRACHT’s core design intent: precise, repeatable pressure limiting that protects pumps, actuators and piping from damaging pressure spikes, distinguishing this division from KRACHT’s pump and flow measurement lines, which move and measure fluid rather than regulate system pressure.

With regional stock and engineering support in Muscat, Seven Star LLC supplies the full KRACHT Valve Technology Series to industrial, marine and process customers across Oman and the wider GCC. Whether a project requires a directly controlled SPV for a low-pressure circuit, a high-flow DV B for a large hydraulic power unit, or a pump-mounted D-valve or T-valve integrated directly onto a KRACHT gear pump, Seven Star LLC’s technical team helps identify the correct valve family, confirms flow and pressure compatibility, and backs every unit with genuine KRACHT warranty and regional support.

Operating Principle

Pressure relief valves across the KRACHT Valve Technology Series work by holding a closing element – either a sliding spool or a poppet – against its seat with a calibrated spring or pilot pressure force, opening a bypass path to tank only once system pressure exceeds the valve’s set point. Directly controlled valves such as the SPV/SPVF and DBD sense system pressure straight against the main spring or poppet, giving fast response suited to lower flows, while pilot operated designs such as the HV/HVF and DV B use a small pilot valve to modulate a larger main stage, allowing much higher flow capacity – up to 1,800 l/min in the DV B – to be relieved smoothly without the pressure override and instability that a directly acting valve would show at that scale.

The practical consequence is that valve selection within the series is driven by the flow and pressure envelope of the circuit being protected: slide-type valves (SPV/SPVF, HV/HVF) offer smooth, low-noise pressure control for continuous-duty circuits, while poppet-type valves (DBD) give sharper response and are favoured where a system must relieve pressure very quickly at higher settings up to 400 bar. The pump-mounted D-valve and T-valve apply the same poppet-relief logic in a compact housing integrated directly onto a KRACHT KF-series gear pump, protecting the pump itself from downstream blockages without requiring a separate inline valve body – a hallmark of the KRACHT Valve Technology Series pump-mounted options.

Engineering Design of the KRACHT Valve Technology Series

Valve bodies across the series are machined from steel or ductile iron and finished for corrosion resistance, with connections available as inline pipe-mounted, subplate/cartridge, or pump-integrated depending on the family: SPV/SPVF and HV/HVF are supplied as pipeline valves for installation directly into hydraulic circuits, DBD is available as both a pipeline and a cartridge valve for block-manifold integration, and the D-valve and T-valve are purpose-built to bolt directly onto the port face of a KRACHT KF-series pump. Spring and pilot-stage components are precision-ground for repeatable set-point accuracy, and seals are selected for compatibility with mineral oil-based hydraulic and lubrication fluids across the full temperature range the valve is rated for.

Where the families diverge is in stage architecture and flow capacity: the SPV/SPVF and DBD are single-stage, directly controlled designs suited to circuits up to 800 l/min and 400 bar respectively, while the HV/HVF and DV B add a pilot stage that allows the main spool to remain nearly fully open at rated flow, minimising pressure override as flow increases. The T-valve differs from the D-valve by adding a separate tank connection, allowing continuous overflow to be routed away from the pump housing for better heat dissipation in duty-cycle-heavy dosing and transfer applications, a design refinement unique to this part of the KRACHT Valve Technology Series.

Key Features

The KRACHT Valve Technology Series gives system designers a genuinely broad pressure-control toolkit from one manufacturer:

• Six real valve families – SPV/SPVF, HV/HVF, DBD, DV B, D-valve and T-valve – cover flows from low-pressure circuit protection through to 1,800 l/min high-capacity relief.
• Directly controlled SPV/SPVF valves protect low-pressure hydraulic circuits up to 30 bar with fast, simple slide-valve response.
• Pilot operated HV/HVF valves extend slide-valve pressure control up to 160 bar for medium-pressure circuits without the noise penalty of a poppet design.
• Directly controlled DBD poppet valves reach 400 bar in pipeline or cartridge form for demanding high-pressure protection duty.
• The hydraulically pilot controlled DV B handles up to 1,800 l/min at up to 210 bar, the highest flow capacity in the series.
• Pump-mounted D-valve and T-valve options integrate pressure relief directly onto KRACHT KF-series gear pumps, eliminating a separate inline valve body.
• The T-valve’s separate tank connection improves heat dissipation on continuous-duty dosing and transfer pumps compared with the standard D-valve.
• Common German manufacturing quality and mineral-oil fluid compatibility across the family simplify spares and maintenance planning for sites running multiple KRACHT valve types.

Industrial Applications

The KRACHT Valve Technology Series protects hydraulic and lubrication circuits across a wide span of industrial duty: low-pressure lubrication and cooling circuits guarded by SPV/SPVF valves, medium-pressure mobile and stationary hydraulic power units relying on HV/HVF, high-pressure industrial presses and test rigs protected by DBD, large hydraulic power units and mobile machinery circuits relieved by the high-flow DV B, and KF-series transfer and dosing pumps fitted with integrated D-valve or T-valve protection against downstream blockages. In Oman and across the GCC, these duties map onto oil and gas processing facilities, marine vessels and offshore platforms, and the industrial base within the Sohar and Salalah economic zones, where hydraulic power units and pump-protection valves both see continuous service.

Backed by genuine manufacturer documentation, Seven Star LLC distributes the complete Valve Technology Series to plant engineers, marine operators and hydraulic system integrators throughout Muscat, Sohar, Salalah and the wider Sultanate, as well as neighbouring GCC markets, ensuring genuine hardware from across the KRACHT Valve Technology Series, correct set-point and flow sizing guidance, and regional after-sales support are available locally.

Technical Specifications

The comparison below lists all six pressure relief valve families in the KRACHT Valve Technology Series, verified against KRACHT’s own published valve technology programme:

SPV/SPVF, HV/HVF, DBD and DV B are also available from Seven Star LLC as individual standalone products for customers who have already selected their specific valve family within the KRACHT Valve Technology Series.

Call To Action

To specify the correct valve family from the KRACHT Valve Technology Series for your pressure-protection application, submit a formal RFQ for the KRACHT Valve Technology Series to Seven Star LLC’s instrumentation and fluid technology division. Working closely with plant engineers in the region, Seven Star LLC maintains regional stock visibility, coordinates factory lead times across SPV/SPVF, HV/HVF, DBD, DV B, D-valve and T-valve configurations, and provides technical datasheets and set-point sizing support so your project team can move from enquiry to installation with genuine KRACHT hardware and full manufacturer warranty.