Coltri MCH22, MCH30, MCH36, MCH45, BOOSTER OPEN, MCH20-MCH24 CNG second and third stage discharge (exhaust) valve assembly, and also on ACE V-VI zero loss boosters. Described by Coltri as "COPPER WASHER 28X34X1 [RONDELLA RAME 28X34X1]". For additional information on this kit, see page 10 of MCH22-MCH45 Parts List, page 10 of Booster Open Parts List, or page 12 of MCH20-MCH24 CNG Parts List; all located under the User Manuals tab.
Nuvair offers authentic parts and equipment manufactured by Coltri Compressors. Beware of inexpensive aftermarket imitations labeled as "replacement," "OEM equivalent," "compatible," or "alternative," as they are not made by Aerotenica Coltri S.p.a. Due to size, weight, or specific requirements, some Coltri products may not be available for online purchase, and others may have extended lead times. To confirm compatibility with your existing equipment or to ensure the product meets your needs, please contact the Nuvair Sales Team for ordering assistance by email or phone.