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Spare parts for gas and oil burners and boilers: gas valves, nozzles, ignition electrodes and transformers, pressure switches, flame detectors, fuel pumps, servomotors and burner control boxes.

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hp-Technik Piston 0840758

SKU 0840758 Brand hp-Technik

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Key specifications

Catalogue article numbers	543.232.001
Component type	piston
Compatible pump series	B-GHG/FDR 25
Application	bypass valve
material	hardened steel
Design features	precision component
Function	pressure regulation
Compatible equipment	hp-Technik liquid fuel pumps
Country of origin	Germany

all specifications (9) ↓

121.12 EUR

110.11EUR

in stock · 1

incl. 21% VAT · 91.00 EUR excl. VAT · shipping calculated at checkout

Worldwide shipping from stock
Original manufacturer part
Dispatch within 24 h for stocked items

Description

The hp-Technik Piston 0840758 is a precision component made of hardened steel, designed for use in the bypass valve of hp-Technik B-GHG/FDR 25 liquid fuel pumps. It functions as a pressure regulation element, ensuring accurate maintenance of system pressure. This piston is a replacement part for the specified pump series and is manufactured in Germany.

Further details

Application oil burners	industrial and commercial boiler houses; high-pressure fuel supply systems
Operating principle	moves inside a cylinder to modulate fuel flow or maintain set pressure

Choosing and fitting

Parts of this type are selected by matching the pump model and series, as well as the piston's diameter, length, and sealing geometry to the original specification. Before ordering, confirm the pump series and revision, as internal components may vary between production batches. Inspect the pump bore for damage and replace associated seals and gaskets during installation.

Signs of failure

Common failure modes include surface wear, scoring from contaminated oil, or sticking due to varnish buildup. These can cause unstable pressure, poor atomisation, or incomplete cut-off in the burner system. If the bypass valve loses sealing or does not hold pressure, replacing the piston typically resolves the issue.

Fits equipment

hp-Technik B-GHG/FDR 25

All specifications

Catalogue article numbers	543.232.001
Component type	piston
Compatible pump series	B-GHG/FDR 25
Application	bypass valve
material	hardened steel
Design features	precision component
Function	pressure regulation
Compatible equipment	hp-Technik liquid fuel pumps
Country of origin	Germany

Part numbers

SKU	0840758
Additional article	543.232.001