A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you "see" the valve's position.

Brand Name	Invena
Colour	N/A
Material	nickel plated brass; ball made from steel
Manufacturer Model No	0616453171015
Wear Type	N/A
Type	Ball Valve
Certifications Met	CE marked
Country of Origin	N/A
Protects From	N/A
Waterproof	N/A
Number of Pockets	N/A
Pack quantity	1
Valve type	Ball
Product diameter	21mm
Product height	46mm
Product length	52mm
Product weight	250g
Water regulations	PZH
Connection type	British standard pipe parallel (BSPP) female
Guarantee	1 year
Commercial & domestic use	Yes
Max working temperature	120c
Max working pressure	1,6 mpa