Replace the Injection Valve

For biocompatible modules use bio / biocompatible parts only!

Do not mix with bio-inert parts.

When

Tools required

Qty.		p/n	Description
1			Wrench 9/64

Parts required

Qty.		p/n	Description
1		5067-6680	3-position/6-port FI valve 800 bar (for G7167C) OR
1		5320-0003	3-position/6-port bio valve 1300 bar (for G7137B)

Qty.

p/n

Description

5067-6680

3-position/6-port FI valve 800 bar

(for G7167C)

5320-0003

3-position/6-port bio valve 1300 bar

(for G7137B)

Prerequisites

WARNING

Toxic, flammable and hazardous solvents, samples and reagents

The handling of solvents, samples and reagents can hold health and safety risks.

Be sure that no solvent can drop out of the solvent connections when removing them from your valve head.
When working with these substances observe appropriate safety procedures (for example by wearing goggles, safety gloves and protective clothing) as described in the material handling and safety data sheet supplied by the vendor, and follow good laboratory practice.

Open the front door.
Turn the spanner nut counterclockwise until the injection valve head detaches from the hydraulic box. Do not use wrenches on the spanner nut.
Take the replacement injection valve head and insert it into the open actuator slot of the hydraulic box. Rotate until the unions at the base of the replacement injection valve head and the valve actuator engage.

OR

If the outside pin does not fit into the outside groove, you have to turn the valve head until you feel that the two pins snap into the grooves. Now you should feel additional resistance from the valve drive while continue turning the valve head until the pin fits into the groove.

NOTE
Check the orientation of the rear side.
Verify the correct position of the Valve TAG.
Continue to rotate until the clocking pin in the injection valve head align with the notch in the housing and press the replacement injection valve head into the actuator.
Replace the spanner nut (1.) and tighten clockwise (2.). Hand tighten only, do not use wrenches on the spanner nut.
Close the front door.
For G7167C and G7137B, proceed with the subsequent steps.
Perform Hydraulic Path Leak Test.
Perform Sampler Leak Test if needed for troubleshooting in case of Hydraulic Path Leak failure.

21-Jun-2025