Microdos Injection Check Valve 1/2” 4×6 mm with Gasket – 11.100.450

Microdos injection check valve 1/2” 4×6 mm with gasket – 11.100.450

Ensure safe, precise chemical dosing with this original Microdos injection check valve. It connects a 4×6 mm dosing line to a 1/2” injection point and uses a built-in non-return mechanism to prevent backflow, pipe drain-down and unwanted mixing in the return line.

• 1/2” male injection valve with integrated non-return
• 4×6 mm hose connection for standard dosing lines
• Includes flat sealing gasket for leak-tight installation

Compatibility

Designed for Microdos dosing systems and many pH/ORP (redox) or chlorine controllers that use 4×6 mm tubing. Commonly paired with Micro pH, Micro Rx, Micro UP and ME/MP series units. Also suitable as a universal replacement on installations with a 1/2” female injection port.

What’s included

• Injection check valve 1/2” × 4×6 mm (ref. 11.100.450)
• Sealing gasket for 1/2” port

Installation tips

• Fit into a 1/2” female boss (e.g., on a saddle clamp or tee) at the designated injection point on the return line.
• Tighten by hand, then a quarter-turn with a suitable wrench; do not overtighten.
• Prime the dosing line and check for leaks; rinse the valve with fresh water after seasonal shutdowns.

Specifications

• Reference: 11.100.450
• Function: Injection check (non-return) valve
• Thread side: 1/2” male (injection point)
• Tubing side: 4×6 mm hose connection
• Seal: Flat gasket included
• Use: pH, ORP/chlorine dosing lines
• Replaces: 11.100.088 (where applicable)
• EAN: 8432611939134

Good to know

Regularly inspect the non-return function. If chemical creepage or backflow is observed, clean or replace the valve to maintain accurate dosing and protect upstream equipment.