Instant push-fit connection for increased ease-of-use: No soldering required. Fittings certified to 200 PSI and 200F (93C): Proven durability and quality. # Fits OD controlled copper, CPVC or PEX pipe: Versatility with all accepted types of pipe. # Design certified and agency listed: Inspector friendly, peace of mind! # Compact, corrosion resistant, robust DZR brass body: Foundation of a strong, durable fitting. # Design certified to ANSI/NSF-61 product standard for use in potable water systems: Quality engineered and manufactured. # No loose components: Integrated design. # Approved to be used underground and behind walls without access panels. # Designed for hydronic heating as well as potable water distribution. The SharkBite Push-Fit fittings have been design certified to IGC 188.The SharkBite Push-Fit fittings are listed by IAPMO and are certified for potable and hydronic heating water distribution (note: Glycol mixture for hydronics should not exceed 50% concentration).The SharkBite Push-Fit fittings have been certified for underground applications and as a manufactured joint without access panels and they meet UPC, IPC and cUPC requirements.The SharkBite Push-Fit fittings are design certified ANSI/NSF Standard 61.