Hitachi Hydraulic Pump Parts Relief Valve Fits EX200-3 Main Valve 4328781

Description :

Packaging & Delivery

Valve Information:

The working principle of the relief valve is to control the pressure and flow of the hydraulic system by adjusting the position of the spool. When the pressure of the hydraulic system reaches the set value, the overflow valve will open, and the excess hydraulic oil will flow back to the oil tank to maintain the stability of the hydraulic system. The relief valve can also be used to control the speed and force of the hydraulic cylinder during excavator operation. By adjusting the flow of the overflow valve, the hydraulic cylinder can be moved slowly or quickly to meet the needs of different working situations.
 

Guangzhou XIEBAGN MACHINERY CO., LIMTED

specialized in:

couplings, rubber mounts, gera parts, hydraulic seals and seal kits for hydraulic hammers, rock breakers, hydraulic excavators,wheel loaders, and JCB badkhoe loaders.

And, Our company also supply:

Engine parts, hydraulic piston pump and hydraulic travel motor, Swing motor assembly and hydraulic component parts, electric parts, etc. Hydraulic hammer breaker parts with piston, cylinder, chisel, through bolt, side bolt, top bush, front head bushing,accumlator, valve, etc.

We always try our best for all our customers and make it better and better. Welcome!

Our Main Products:

Seal Series:
arm cylinder seal kit, Boom cylinder seal kit, Bucket cylinder seal kit, main pump seal kit, travel motor seal kit,
swing motor seal kit, control valve seal kit, center joint seal kit, track adjust seal kit, bushings,
floating seals, o-ring box, pusher, etc.

Engine parts:
cylinder heads, cylinder blocks, crankshafts, camshafts, connecting rods, water pumps, turbo chargers,
engine assys, fan blades, main bearing and connecting rod bearings, pistons, piston rings, liner kits, etc.

Hydraulic parts:
hydraulic cylinder assembly, gear pump assembly, hydraulic pump assembly, travel motor assembly, final drive assembly, swing motor assembly,
main valve assembly, service valves, gasket kits, etc.

Electric Parts:
solenoid valves, water sensors, pressure sensors, throttle motors, stop solenoid, controllers, monitors, etc.

Other Parts:
seal kits, bushings, floating seals, o-ring box, pushers, couplings, engine cushions, bearings, gears, fuel filter
oil filter, air filter, track link assy, front idler, carrier roller, hydraulic oil cooler, water tank, track link assy, etc.

Products Show:

FAQ:

Q: What are the advantages of relief valve?
A:The primary advantage of using a relief valve is that it helps protect your system from overpressure. If too much pressure builds up within the system, the relief valve will open and vent off any excess pressure before it causes any damage to your equipment or pipes.

Q:What is the function of relief valve in diesel engine?

A: Main purpose is to lift when over pressure occurs in the combustion area; the resultant combustion gas being expelled to a through a flang-ed pipe to deck.

Q:What are the disadvantages of pressure relief valve?
A: The disadvantages of this valve include opening and closing not being prompt, a large space is required when assembling, starting, and maintaining it. It is also prone to leakage when operated at high temperatures due to periodical fluctuations. The pressure control valve also creates vibration.