No cheaper prices can be found, more margin are provided, minimal order 1000 pcs can be accepted especially for you!

1. Piston design, with function of back-flow prevention;
2. Water level adjustable by turning the brass screw;
3. Optional brass rod and aluminium rod;
4. Optional rod length 4.7"-7";
5. Inside drain guard keeps impurity out of vavle, and easy to clean.
6. Optional G1/2", G15/16" POM plastic thread.