SuperScale Locomotive Company

1.6” Scale Nathan Reversible Boiler Check Valves

With built-in shutoff valve

For 5/16” Tubing

These are from the original run where the flange is actually bolted to the boiler adapter.

Not recommended for operations higher than 120psi without modification.
Studs should be replaced with bolts, and the bolt heads machined down for clearance on the backside. This ensures that the threads alone are not holding the valve against the boiler pressure. Then they will be safe for higher pressure operation.