BTW offers SY sphere exchanging with new kits from Flying Spares. FS's kit has a new sealing arrangement that is a big improvement on the original steel ball. The price is $350.00 each which includes a fresh Electroless nickel replated sphere and nitrogen charging.
Accumulator Control Valves exchanges are available as well. They are rebuilt then calibrated on our own testing rig. The price is $325.00 ea.which includes the rebuild kit and a new ball housing.
These are gold zinc plated with silver zinc plated or stainless fittings - if you send in your fittings for exchange.
Brake pump rebuilds are offered on exchange for $205.00 ea. Each pump is plated and tested on our test fixture.
Need your G-Valve exchanged? The bodies are plated with gold zinc and the fitting is black oxide coated. $145.00 ea.