CPF Pressure Fittings

Brand: Crystal Engineering by Ametek

CPF Fittings and Hose are a new line of quick-test pressure fittings for calibration and test applications -- designed with an emphasis on safety.

Crystal Pressure Fittings (CPF) perform up to 15 000 psi / 1000 bar, and feature a safety weep hole to alert you before you accidentally disconnect from a pressurized system. It can also be used as a bleed point.

Each fitting is machined in 316 Stainless Steel and laser markings indicate the fitting type, size, part number, and Maximum Allowable Working Pressure to prevent a mismatched connection.

An industry-first patented O-ring connection allows CPF Fittings to maintain a leak-free seal up to 10 000 psi with only finger-tightening.

This offers an alternative to commonly-used NPT Fittings, which require technicians to wrap their fittings in thread tape and use a wrench to tighten each installation.

Unlike other quick-change fittings, the O-rings in CPF Fittings are also easily replaceable.

New! We have added a new line of BSP fittings, including the industry's first 1000 bar finger-tight fitting.
  • Purpose-designed for testing and calibration
  • 2 seals: Use fingers for an O-ring seal or use a wrench for a metal to metal cone seal (good to -40°C)
  • Laser marked: Thread type, size, and MAWP
  • Interchangeable (wrench tight) with HIP* and Autoclave Engineers** medium pressure (¼”) series fittings and adapters
  • *HIP is High Pressure Equipment Company
  • ** Autoclave Engineers is a division of Parker Hannifin Corp.



  • Maximum Allowable Working Pressure (MAWP): 10,000 psi/700 bar/70 MPa
  • Wrench-Tight: -40 to 150° C
  • Finger-Tight: -20 to 50° C
  • Minimum Hose Bend Radius: 1.0" (25 mm)


  • Thread Type: 7/16-20 UNF 2B
  • Cone Angle: 60°, Nominal
  • Fittings: High Strength 316 Stainless Steel
  • Hose: Polyamide Core with Urethane Jacket
  • External Hose Diameter: 0.235" (6 mm)
  • Internal Hose Diameter: 0.08" (2 mm)
  • Hose Weight: 0.0179 Lbs/ft (26.6 g/m)
  • CPF Female O-Rings: AS568A-012, Viton 80 or 90 #3981
  • O-Ring Lubricant: Molykote® 55


  • Thread Lubricant: Use a Process Compatible Fluid
  • Wrench Torque: 100-140 in-lbs (11.3 -15.8 Nm)

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