Spacer Stack Assy V3430 ( V3430-01 ) for Clack WS1.25 or 1.5 or 2L Valve and other "brands" that use the Clack type of valve under their private label.
Note: The Spacers are Black on this slightly larger version.
Standard WS1 ( smaller ) are Gray ( PN V3005 ).
* WARNING: Do NOT lubricate this assembly. Internal o-rings are silicone, and the tolerance is already "tight". Adding any lubricant can cause the piston to "bind", and also "pull out" and damage o-rings. Also, these o-rings are NOT sold separately. So if you damage the Spacer Stack Assembly, you have to replace the entire Assembly.