This standard spring is supplied in all Respons TMS and Deceptor Pro II valves and is also an optional extra for Mach 2 valves when set up for atmosphere venting. It is recommended for use when the valve is configured for atmosphere venting and the engine idle vacuum is greater than 19Hg. For full recirc venting or an engine idle vacuum of less than 19Hg, the softer spring (6116) should be used instead.
![Standard Replacement Spring [6115]](http://www.gfbeurope.com/cdn/shop/files/218044_537a85f2-08fe-4869-80ff-3d41eff9612e.jpg?v=1741359982&width=1445)
