Komatsu PC35MR-2 20T-62-71160 Excavator Hydraulic Main Control Valve
The excavator control valve, also known as the main control valve (MCV), is a critical component in hydraulic systems of excavators and other heavy construction machinery. It regulates the flow, pressure, and direction of hydraulic oil to various actuators (such as hydraulic cylinders and motors), enabling precise control of movements like digging, lifting, swinging, and traveling.
Modern excavators rely on advanced hydraulic control valves to ensure smooth operation, energy efficiency, and safety. This guide explores the working principles, construction, functions, applications, maintenance, and future trends of excavator control valves.
| Appliion | Excavator parts |
| Part name | control valve assy |
| Part number | 20T-62-71160 |
| Model | PC35MR-2 |
| MOQ | 1PC |
| Payment term | T/T, Paypal, Trade assurance, or as required |
| Delivery | 3 days after the payment received |
| Shipment | by sea, by air, by express, or as required |
List of spare parts
| # | Part No | Part Name | Qty. | Price request |
| 1 | 20T-62-71160 | Union | 1 | |
| 2 | 07235-10421 | Elbow | 1 | |
| 3 | 20T-62-84370 | JOINT | 1 | |
| 4 | 20T-62-56710 | UNION,(FOR 2ND TRAVEL SPEED) (OP) | 1 | |
| 5 | 20T-62-67150 | Union | 4 | |
| 6 | 07040-11812 | PLUG,(WITH LOCK VALVE) | 2 | |
| 7 | 20T-62-71150 | Union | 2 | |
| 8 | 07235-10313 | Elbow | 1 | |
| 9 | 20T-62-56710 | UNION,(FOR 2ND TRAVEL SPEED) (OP) | 5 | |
| 10 | 07040-11812 | PLUG,(WITH LOCK VALVE) | 2 | |
| 11 | 07002-11823 | O-RING,(FOR 2ND TRAVEL SPEED) (OP) | 20 | |
| 12 | 20T-62-71450 | Nipple | 1 | |
| 13 | 22F-973-1210 | Elbow | 1 | |
| 14 | 07040-11812 | PLUG,(WITH LOCK VALVE) | 1 | |
| 15 | 23S-61-33290 | Elbow | 1 | |
| 16 | 07002-12434 | O-RING,(FOR 2-ACTUATER ATTACHMENT) | 3 | |
| 16A | 07002-11823 | O-RING,(FOR 2ND TRAVEL SPEED) (OP) | 1 | |
| 17 | 07230-20210 | UNION,(FOR CROSS LINK) | 1 | |
| 18 | 07002-11423 | O-RING,(FOR 2ND TRAVEL SPEED) (OP) | 1 | |
| 19 | 20T-62-56710 | UNION,(FOR 2ND TRAVEL SPEED) (OP) | 1 | |
| 20 | 20T-62-56710 | UNION,(FOR 2ND TRAVEL SPEED) (OP) | 1 | |
| 21 | 07002-11823 | O-RING,(FOR 2ND TRAVEL SPEED) (OP) | 2 | |
Working Principle
The control valve operates based on hydraulic or electro-hydraulic signals from the operator’s joystick or control system. Its primary function is to direct pressurized oil to different actuators while maintaining optimal pressure and flow.
Key Operational Mechanisms:
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Directional Control: The valve shifts its internal spool to open or close oil passages, directing flow to the desired actuator.
-
Pressure Regulation: Relief valves and pressure compensators maintain system stability, preventing overload.
-
Flow Control: Adjusts oil flow rate to ensure smooth and proportional movement of hydraulic cylinders and motors.
Most modern excavators use load-sensing control valves, which adjust pump output based on demand, improving fuel efficiency.
FAQ
- Q: What are your terms of packing?
- A: Generally, we pack our goods in neutral wooden cartons. If you have a legally registered patent,
- we can pack the goods in your branded boxes after getting your authorization letters.
- Q: What about the payment options?
- A: PayPal, T/T, and other payments as request.
- Q: What are your terms of delivery?
- A: EXW, FOB, CFR, CIF, etc.
- Q: How about your delivery time?
- A: Generally, it will take 3 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
- Q: When can I get the price?
- A: We usually quote within 12 hours after we get your inquiry. If urgent to get the price,
- please call us or tell us by email, we will regard your inquiry priority.
- Q: How do you make our business long-term and good relationship?
- A: 1. We keep good quality and competitive price to ensure our customers benefit ;
- 2. We respect every customer as our friend and we sincerely do business and make friends with them,
- no matter where they come from.
- Q: Do you test all your goods before delivery?
- A: Yes, we have a 100% test before delivery.
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