THIS BALL VALVE HAS A UNIQUE FEATURE OF HEIGHT ADJUSTMENT ARM.IN ORDER FOR THE BALL VALVE TO FUNCTION CORRECTLY IT REQUIRES A BALL FLOAT.THIS VALVE COMES WITH EASY OPERATING ADJUSTABLE ARM & A PIVOTING THREAD FOR THE BALL FLOAT.THIS BALL VALVE IS IDEAL TO BE USED & FITTED USING WORKING PRESSURE OF 0.2-6 BAR