5534 plastic screw valve products are offered for sale by suppliers on Alibaba.com, of which other valves accounts for 4%, ball valves accounts for 2%, and check valves accounts for 1%.
A wide variety of plastic screw valve options are available to you, You can also choose from medium temperature, plastic screw valve,as well as from water plastic screw valve and whether plastic screw valve is steel, stainless steel, or iron.