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White push-fit adapter fitting with two tube connections

Parker

Parker 6366 56 08WP2 Push-Fit Adapter Fitting 1/4 in x 5/16 in

SKU CH-CJER-CE7GW

Push-fit adapter connects 1/4 in and 5/16 in tubing for vacuum applications up to 230 psi and 200 °F

  • TypeOther
  • Push-fit connection speeds installation without tools
  • Bio-based nylon body resists corrosion and chemical exposure
  • 230 psi rating handles demanding vacuum applications
  • 200 °F maximum temperature suits hot-water systems
  • 1/4 in to 5/16 in step adapts mismatched tubing sizes

Application & Fit

This Parker push-fit adapter connects 1/4 inch tubing to 5/16 inch tubing using push-to-connect ends on both sides. It suits vacuum applications in residential bath plumbing where a quick, tool-free joint is preferred. The white bio-based nylon body keeps the fitting lightweight and corrosion-resistant for standard water supply lines.

Pressure, Temperature & Seal

Rated for 230 psi maximum operating pressure and 200 degrees F maximum operating temperature, the adapter handles typical household hot and cold water pressure without leaking. No pre-applied thread sealant is included, so installers should verify seal compatibility with their tubing and apply sealant if their code or practice requires it.

Upgrade Path & Limits

The fitting replaces compression or barbed couplings when faster assembly and disassembly are needed during service or remodel work. It is not suited for gas lines, high-temperature steam, or applications exceeding the stated pressure and temperature ratings, and it cannot join tubing sizes other than the two specified diameters.

Highlights

  • Push-fit connection speeds installation without tools
  • Bio-based nylon body resists corrosion and chemical exposure
  • 230 psi rating handles demanding vacuum applications
  • 200 °F maximum temperature suits hot-water systems
  • 1/4 in to 5/16 in step adapts mismatched tubing sizes

Specifications

BrandPARKER
TypeOther

Questions about this item

How do I install the push-fit adapter fitting and what step is often missed?

Push each tube firmly into the push-to-connect ports until it seats against the internal grip ring; the step often missed is not pushing far enough to engage the collet, which can cause leaks under 230 psi pressure.

What maintenance or replacement will the bio-based nylon fitting need over time?

Inspect the white nylon body and collets periodically for stress cracking or discolouration from 200 °F water exposure; replace the fitting if the grip ring no longer holds the 1/4 in and 5/16 in tubes securely.

What limit appears first during sustained high-temperature vacuum use?

The 200 °F maximum operating temperature is reached before the 230 psi pressure rating in continuous hot vacuum service, so monitor fluid temperature to stay within the nylon material limit.

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