Setting up a shock arrestor pre charge

[Sharp Point]

Ayup guys n gals, as title says. I’ve never had to fit one purely for water knock before, only on combi boiler installs.

Thanks in advance

 

[ShaunCorbs]

.2 under water pressure

 

[Sharp Point]

.2 under water pressure

Dynamic or standing Shaun?
Thanks

 

[ShaunCorbs]

Dynamic or standing Shaun?
Thanks

Standing

 

[Sharp Point]

Standing

I thought it’d have to be below standing, but wasn’t 100% sure. And for double cheekiness, can you explain the theory of being 0.2 below? I can grasp that if it was above the standing pressure, the inertia of the water wouldn’t do ought against a hard membrane of pressure.... but like hitting a concrete wall.

 

[ShaunCorbs]

Tap opens pressure reduces tap shuts fast pressure increases and expansion vessel expands etc

 

[Sharp Point]

Tap opens pressure reduces tap shuts fast pressure increases and expansion vessel expands etc

Thanks

Now get yourself a nice cold Stella on me