John Valve has four complete sets of Ball Machines dedicated to machine stainless steel balls. We have a production capacity of 100 thousand balls per month, 80% to supply overseas valve manufacturers and 20% for in house assembling. 

We can provide balls in any size and any machinable material to meet every customer demand. All balls are produced to very exact tolerances in accordance with customer's drawings and dimensions.

To ensure the highest quality each and every parameter of the balls is thoroughly inspected before packing and dispatch. Well-trained and experienced engineers are dedicated to the precision and work optimization to ensure all the balls are delivered in high quality.

Inspection and measurement instruments used to test and verify specifications: “Roundness Testing Machine” and “Smoothness Testing Machine”. By having these machines, John Valve is able to offer the corresponding test reports to each of our customers.