1 Inch Ball Float Valve Part 1 (Straight Arm) for use in low pressure systems (usually tank fed).
Manufactured to BS1212.
Brass body, bronze piston and bronze seat for smooth, long life operation.
1 Inch BSP Thread - Actual Diameter of thread approximately 1.25 Inches (see below)
A Low Pressure Ball Float Valve is provided with a larger hole within the valve assembly to fill the cistern (or tank) up more quickly, however if the water pressure is too high this will result in excessive noise or water hammer. Conversely if a high pressure valve or insert (with small hole) is used the cistern (or tank) will take a long time to fill
IMPORTANT NOTE, MOST PLUMBING PRODUCTS ARE STATED AS BSP IMPERIAL THREAD MEASUREMENT WHICH MEANS THAT ACTUAL DIAMETER OF THE THREAD SIZE IS APPROXIMATELY 1/4 INCH LARGER THAN THAT STATED IN BSP TERMS. FOR EXAMPLE THIS 1 INCH BSP THREAD ACTUALLY MEASURES APPROXIMATELY 1 1/4 INCH IN DIAMETER