152301000253B Pressure Relief Valve Block Sany SAT40C Articulated Dump Truck Spare Parts

152301000253B Hydraulic Steering Safety Pressure Relief Block for Sany SAT40C

The 152301000253B Pressure Relief Valve Block (also referred to as the Steering System Overpressure Safety Manifold) is a critical hydraulic safety component designed for the steering loop of the Sany SAT40C articulated dump truck. Articulated dump trucks operate under continuous, heavy loads in severe mining, earthmoving, and quarrying environments. Because the truck steers by articulating its entire chassis using twin double-acting steering cylinders, high-impact ground bumps or sudden steering inputs can generate immense hydraulic pressure spikes (shocks) in the steering lines. This relief block acts as the primary safety barrier; its integrated cartridge opens immediately to vent excess oil pressure back to the low-pressure reservoir, safeguarding steering pumps, cylinders, and hoses from bursting.

This assembly integrates the primary pressure-limiting Overflow Valve (152301000253B002) cartridge. The manifold block is machined from high-tensile steel or low-porosity cast alloy, designed to withstand continuous working pressures and prevent physical warp or fluid leakages under severe mining vibrations. We supply the fully integrated 152301000253B pressure relief block as well as individual replacement valve cartridges and sealing rings. Both genuine Sany OEM kits and highly reliable aftermarket options are in stock for rapid international shipping.

General Assembly Specifications

152301000253B Assembly Component Parts List

Below is the detailed parts catalog breakdown of the hydraulic steering pressure relief block as referenced in the Sany SAT40C technical manual. All listed valve cartridges are orderable separately for targeted manifold servicing:

Features & Benefits of Our Pressure Relief Valve Block

• Critical Overpressure Safety Relief: The high-accuracy Overflow Valve (152301000253B002) cartridge regulates the peak pressure within the steering manifold, venting excess oil back to the hydraulic sump during high-amplitude ground shocks to prevent line bursts.
• Durable Monoblock Design: The compact main block manifold is machined from low-porosity, high-tensile material, maintaining exact internal bore alignment under continuous high operating pressures and temperature cycles.
• Direct Replacement Cartridge: Features a screw-in, cartridge-style design that simplifies field replacement, minimizing machine maintenance downtime.

Ordering & Technical Maintenance Guidelines

1. Verify Pressure Setting Calibrations: Hydraulic relief and overflow valves are calibrated to specific factory pressure ratings (MPa/PSI). Please provide your Sany SAT40C’s chassis serial prefix so our technical team can verify the exact cartridge pressure settings before shipping.
2. Always Renew Gaskets and O-rings: Valve cartridges utilize specialized polyurethane or nitrile O-rings and backup rings to seal. Always install fresh, pre-lubricated seals whenever a valve cartridge is removed or replaced to prevent high-pressure external oil leaks.
3. Ensure Cleanliness on Installation: High-pressure proportional hydraulics are highly vulnerable to particulate contamination. Keep the block port caps on until the exact moment of connecting the steel hoses, and clean the cartridge cavity thoroughly to prevent dirt from binding the valve spools.

To request pricing and lead time, send your B2B inquiry with part number 152301000253B, your required quantity, and your destination country to our sales desk to receive a detailed quote within 1 business day.