Keystone Check Valve – Knife Blade
Mechanical check valve against water hammer, its main function is to contain the overpressure exerted by the counter flow of the water and to avoid as much as possible damage to the pipe, valves or pumps due to its wafer design, the handling and assembly of it is very practical compared to the traditional checks.
This valve is easily repairable since it has few elements such as body, disc, pin, internal spring, bushings, o-ring.
Keystone Check Valve – Duo Check
Mechanical check valve against water hammer this valve has the disc divided in two and held by means of a fixed bar, its design is to be able to operate more quickly since the closing element is divided and allows a smaller area in such a way that it responds more quickly to closing and opening.
Its main function is to contain the overpressure exerted by the counter flow of the water and to avoid as much as possible damage to the pipe, valves or pumps due to its wafer design, the handling and assembly of it is very practical compared to the traditional checks.
Keystone Check Valve – Swing Type
Excellent alternative for controlling counterflow with high speed, since it has the closing spring on the outside as well as a counterweight that is calculated according to the flow pressure that is going to be handled.
In such a way that the closing speed can be controlled and in this way be a silent valve but mainly the closing control allows mechanical fatigue due to knocking.
