Coltri MCH36, BOOSTER OPEN, and MCH20-MCH24 CNG third stage/fourth stage piston kit. Described in Coltri literature as "Kit 3rd/4th Stage Pad Ø60 MCH36 [KIT PATTINO 3°/4° STADIO Ø60 MCH36]". For additional information on this kit, see page 14 of MCH22-MCH45 Parts List, page 12 of Booster Open Parts List, or page 14, 16 & 18 of MCH20-MCH24 CNG Parts List; all located under the User Manual 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.