Would like to introduce one kind Concrete Pump Parts -concrete pump manual shut off valve, this kind of cutting valve is hand operation one, usually we use different types of pipe and flange, we can make it as client's requirement.    

We always use the 5"*4.5mm 20# pipe ot st52 Concrete Pump Pipe , with 148mm flange, thickness is 4.5mm. Also use 5"*8.0mm thickness , Outer diameter is 140mm concrete pump delivery pipe, with 157mm flange collar. Or any pipe and flange collar size you need, we can make as client's requirement ! We always use the shut off valve to cutting the concrete and help the concrete pump mobile pump and stationary pump working.