Features：
For prevented water from flowing back into solenoid and the cylinder
Easy to install and replace
A non-return function to prevent the back flow when the pressure changes
Specification:
Material: Aluminium Alloy & Acrylic
Color: Silver
Small and compact
Easy to install and replace
Size: (L*W) 8.34*1.4cm/3.31"*0.55"
Package includes:
1 x CO2 Bubble Counter
Pictures:
