Overview
The Spears AX1J3 is a 1″ NSF-61 CPVC bulkhead tank adapter engineered for connecting pipes and tubing through tank or bulkhead walls. Manufactured from Schedule 80 CPVC (chlorinated polyvinyl chloride), this adapter combines corrosion resistance with lightweight construction, making it ideal for potable water systems, chemical processing, and industrial plumbing applications where reliability and code compliance are essential.
Key Features
- NSF-61 certification for potable water service and hot water applications
- Schedule 80 CPVC construction for superior corrosion resistance and chemical compatibility
- Socket and NPT female thread configuration for flexible connection options
- Neoprene gasket provides tight sealing and chemical stability across temperature ranges
- Made in the USA with ASTM D1785 compliance for quality assurance
- Lightweight thermoplastic design reduces installation labor and system weight
Technical Specifications
- Part Number: AX1J3
- Manufacturer: Spears Manufacturing
- Size: 1″
- Material: Schedule 80 CPVC
- Configuration: Socket x NPT Female Thread
- Gasket Material: Neoprene
- Maximum Pressure Rating: 150 psi at 73°F
- Maximum Fluid Service Temperature: 200°F
- Standards: NSF-61, ASTM D1785
- Color: Gray
- Installation: Threaded end and nut mount through tank wall with internal gasket and nut
Typical Applications
The Spears AX1J3 bulkhead adapter is well-suited for:
- Potable water distribution and storage systems
- Hot water recirculation lines
- Chemical processing and industrial liquid handling
- Pool and spa circulation systems
- HVAC chilled or condenser water loops
- Food and beverage processing where NSF certification is required
Compatibility & Replacements
Compatible With
- 1″ Schedule 80 CPVC pipes and fittings
- CPVC socket fusion systems (when used with appropriate adhesives)
- Standard NPT threaded connectors and adapters
- Neoprene gasket–compatible tank wall thicknesses (typically 1/8″ to 3/4″)
- Potable water and non-potable industrial fluid systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The AX1J3 is a specific Spears model; confirm the exact configuration (socket x thread) matches your application requirements before substitution.
Works With
- CPVC solvent cement and adhesive systems
- NPT thread sealants and plumber’s tape
- Standard nut and wrench installation tools
- Schedule 80 CPVC valve and fitting assemblies
- Both potable water code–compliant and industrial chemical piping systems







