PH Series Couplers (hydraulic, fluid) up to 4,500 psi connect with valved H Series Nipples, while PH Series Nipples connect with valved H Series Couplers. It is recommended that only one half of the connection (coupler or nipple) be PH version, not both.

Parker's PH Series have poppet valves with an added pressure relief feature to allow connection under static pressures up to 3000 psi. With a PH Series Coupler installed on a pressurized line you can easily connect with a mating valved H Series Nipple. PH Couplers are available in 3/8", 1/2" and 3/4" sizes with other sizes available by request.

Likewise, with a PH Series Nipple installed on a pressurized line you can easily connect with a mating valved H Series Coupler. PH Nipples are available in 1/2" size with other sizes available by request.

Technical Characteristics:
• Sizes: 3/8” – 1”
• Materials: Steel
• Port Ends - Couplers: Female SAE, Female NPTF std (Male SAE 37 degree Flare, Male NPT by request)
Port Ends - Nipples:Female NPTF, Male SAE 37 degree Flare std• Seal Options: Nitrile, Fluorocarbon, Ethylene Propylene
• Coupler options include: Sleeve Lock

Markets:
• Industrial
• Construction
• Oil and Gas
• Agriculture

Features/Benefits:
• Original H Series multi-purpose coupling, widely used in varied applications
• PH version connect under pressure option to connect lines with residual pressure caused by thermal expansion
• Male port end options add versatility

Applications:  
• Industrial hydraulic lines
• Water and coolant lines
• High pressure fluid transfer
• Mobile equipment
• Cleaning equipment
• General purpose fluid applications where residual pressure is present on the Nipple side of the connection