• 204-3923 2043923 Relief Valve Mini Hydraulic Excavator Spare Parts For 4M40 305CR 305.5

• Specification

• Function

Relief valves, also often called overflow valves, are a type of hydraulic pressure control valve. Their main job is to prevent the system pressure from exceeding a set value. When the hydraulic system pressure exceeds the pressure that the 204-3923 valve is set to, it automatically opens to direct excess hydraulic oil back to the tank, keeping the system operating within a safe pressure range to avoid damage to components like pumps, cylinders, and pipes. It can perform functions such as constant-pressure overflow, pressure stabilization, system unloading, and safety protection.

• Compatible models

MINI HYD EXCAVATOR 305 305.5 306 C.ater.pillar.

• More other valve parts fit for C A T machine

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .

20576614