Remote Relief Pressure Control Remote Use like this!!

Remote Control Valve Operation

This Remote Control Valve acts to control the Pilot pressure to command the Main Relief Valve, allowing the user to adjust the system pressure from a convenient position without directly rotating the main valve.

1. Principles of work

Oil from the hydraulic pump will flow into the Main Line system.

The Main Relief Valve acts to control the maximum pressure of the system.

Bring Pilot or Vent Cable from Main Relief Valve to Remote Control Valve

The Remote Control Valve will control the pressure in the Pilot line.

When turning the hand, adjust clockwise.

Pilot pressure will increase, causing the setting pressure of the system to rise.

When rotating the hand, adjust it counterclockwise.

Pilot pressure decreases, causing the system's pressure to drop.

The drained Pilot oil flows back the tank through the Drain or Return port.

This valve does not receive the system flow rate full oil, but only controls the Pilot pressure.

Duty of each port

Hand rotating pressure adjustment

Use to increase or decrease Pilot pressure.

P / IN port

It's the incoming Pilot pressure port to the valve.

X / VENT Port

Continue with Pilot or Vent port of Main Relief Valve

T / DR port

It is a tank return oil drain. The tank must be connected directly and with low resistance pressure.

⚠️ The position and letter of the port may vary from model to model. The symbol on the valve body or manual should be checked before installing every time.

How to install and use

Installation process

Stop the machine and extinguish the power.

Drain the suspended pressure in the system before starting the work.

Check the P, X, T or DR ports correctly.

Connect the Pilot Line from Main Relief Valve's Vent port to the Remote Control Valve.

Connect the Drain or Return port directly back the fuel tank.

Install the pressure gauge in a position where the system pressure can be read.

Check all the joints and strings tightly.

Loosen the rotating hand to a low pressure position before starting the machine.

Turn it on and gradually rotate, adjust the pressure up.

Read the value from the gauge and set the pressure according to the machine specification.

How to deploy

Turn clockwise to increase pressure.

Turn it counterclockwise to reduce pressure.

Adjust a little at a time and wait for the values on the gauge to stand still.

Once set up, a hand-cranked lock or a lock nut should be screwed if the model has a lock system.

Caution

Do not attach the Remote Control Valve directly to the main pressure pipe.

Because the valve itself is only designed for Pilot circuits.

Do not plug the Drain or Return port.

If the oil is not drained, the pressure will be abnormal, the valve may become uncontrollable or damaged.

The Drain line should return the tank directly.

Avoid coupling with pipes with high reverse pressure.

The pressure gauge must be installed every time it is adjusted.

The approximate adjustment should not be rotated from the feeling.

Do not set the pressure to exceed the system.

Because it can damage pumps, hydraulic cables, seals, cylinders, or other equipment.

Slowly adjust the pressure.

Rapid pressure-increasing rotation can cause pressure surges.

Check the direction and port symbol correctly.

Port switching connections may cause the valve to not function or abnormal control pressure.

Do not remove wires or joints while the system is pressurized.

High-pressure oils can rush into the skin and cause severe injuries.

Keep the oil and Pilot line clean.

Small dirt can cause control holes to clog and the pressure to not remain stationary.

Leak detection after installation

If there is an oil leak, the machine should be stopped and fixed immediately.

Symptoms that may occur when misinstalled.

Adjust the hand to rotate and the pressure does not change.

The pressure is high all the time.

Pressure drop or not working at full power

Voltage swings. Not stagnant.

Main Relief Valve is noisy.

Unusually hot oil

Pilot strings shake or jerk.

The seal of the Remote Control Valve is leaking.

Simple summary: Connect the Pilot line directly to the Drain tank, start adjusting from low pressure, and have to look at the gauge every time. 🔧💧

# Remote contolval release # vtechengineering # C175 # Reliefvalve # Learn the hydraulic system