EXCAVATORS PC300 PC350 PC350HD PC350LL PC360 Komatsu
Main Control Valve: The primary function of the main control valve
is to actively manage and regulate the flow rate or pressure of
fluid within the system. It is responsible for controlling the
desired system operation, such as adjusting fluid flow to a
specific level.
Relief Valve: In contrast, the relief valve is a safety device that
activates only when system pressure exceeds a pre-set limit. Its
sole purpose is to protect the system from overpressure conditions.
Operation:
Main Control Valve: This valve is operated manually by a user or
automatically by a control system to achieve specific tasks. It
allows for fine-tuning and control over flow rates, pressure, or
other system parameters.
Relief Valve: A relief valve operates passively, remaining closed
during normal operating conditions. It automatically opens when
system pressure becomes excessive, facilitating the escape of
surplus fluid and restoring the system to a safe pressure level.
Setting and Adjustment:
Main Control Valve: Users or automated control systems can adjust
the main control valve to fine-tune system parameters within
defined operational ranges.
Relief Valve: Relief valves are typically pre-set to open at a
specific pressure limit, determined based on system requirements
and safety standards. They are not meant to be actively adjusted
during normal operation.
Placement in the System:
Main Control Valve: Positioned within the system to actively manage
fluid flow or pressure, typically closer to the points where fluid
is utilized or distributed.
Relief Valve: The relief valve is strategically loed downstream of
the main control valve and closer to the system's pressure source.
It serves as a protective barrier to prevent overpressure
situations and safeguard the system's integrity.
| Pos. | Part No | Qty | Parts name | Comments |
| 723-47-25600 | [1] | Valve, Control Komatsu China | |
| ["SN: 80001-UP"] |$0. |
| 1. | 723-40-93801 | [2] | Valve, Relief Komatsu | 0.5 kg. |
| ["SN: 80001-UP"] analogs:["7234093800"] |
| 2 | 700-22-11410 | [1] | O-ring Komatsu OEM | 0.001 kg. |
| ["SN: 80001-UP"] |
| 3 | 700-80-64220 | [1] | Ring, Back-up Komatsu | 0.001 kg. |
| ["SN: 80001-UP"] |
| 4 | 07002-12434 | [1] | O-ring Komatsu China | 0.01 kg. |
| ["SN: 80001-UP"] analogs:["0700202434", "0700213434"] |
Hydraulic pump and valve parts are designed precisely to work in a
hydraulic system to meet the prime product requirements for machine
performance, reliability, durability, operating costs and
productivity.
1. The pump and valve parts are built to fit to the genuine drive
gearbox system.
2. The pump and valve parts are supplied strictly according to the
genuine parts alog.
3. All the pump and valve components are manufactured from
carefully selected materials with standard quality using standard
production process heat treatment processes — including
carburizing, nitriding, and induction hardening.
4. Surplus stock and the various varioties of pump parts that cover
excavator. HITACHI KOMATSU HYUNDAI Vo-lvo DOOSAN KOBELCO SUMITOMO
KATO JCB
1. Warranty Period: 3 Months' warranty from the date of arrival.
Longer period of 6 months' warranty could be offered with higher
price level.
2. Warranty type: replacement of the parts that have quality
problem.
3. Warranty is not valid for below s
* Cutomer give wrong information about the order
* Force Majeure
* Wrong installation and operation
* Rust because of wrong stock & maintenance
* Strong carton or wooden box for gear components. Wooden box for
gearbox assembly
* Delivery methods: By Sea, By air to local internation airport, By
express like DHL TNT FEDEX
