550 391 12 Valve, Over Center

RANGER 800-2

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Part Number	550 391 12
Description	Valve, Over Center
Brand	Sandvik (Tamrock)
Assembly	VALVE ASSEMBLY
Type	Drill Rig Spare Part

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550 391 12 (also written 55039112, 550-391-12, or 550.391.12) is a Sandvik valve, over center spare part used in the VALVE ASSEMBLY assembly of the Sandvik DX700. Verified compatible with 20 Sandvik machine models including DQ500, DX500R, DX700. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.

Compatible machines

OEM cross-reference

550 391 12

About Sandvik 550 391 12 Valve, Over Center

This valve controls fluid flow and pressure within the hydraulic or pneumatic system of the Sandvik DX700. Part of the VALVE ASSEMBLY, it ensures precise regulation of drilling parameters including feed force, percussion frequency, and rotation speed.

This is an OEM-compatible aftermarket replacement part for the Sandvik DX700 (DX700). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.

Frequently asked questions

Why use OEM-compatible parts for Sandvik drilling equipment?

OEM-compatible parts are manufactured to the same dimensional tolerances and material specifications as original components, ensuring proper fit, reliable performance, and maintaining the designed safety margins of the drilling machine.