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High-Pressure Regular Unheated Whip Hose Assembly 3500PSI

The Graco 256626 Unheated Whip Hose Assembly is a 6 ft (1.8 m) high-pressure, unheated whip assembly rated at 3,500 psi for use with Reactor systems—designed to resist moisture-sensitive isocyanate and prevent hose mis-connection.

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Description

The Graco 256626 Unheated Whip Hose Assembly is engineered for high-performance plural-component spraying when paired with Graco Reactor systems. With a 1/4-inch (6.3 mm) inside diameter and a length of 6 ft (1.8 m), it supports a maximum working pressure of 3,500 psi (24 MPa or 241 bar) under fluid service. The hose is covered with a proprietary butyl cover that protects against moisture-sensitive isocyanate chemistry and features a design where the isocyanate and resin hoses have different fitting sizes to prevent accidental mis-connection. Though described as “unheated,” it retains insulation and protective layering suitable for demanding job-site conditions. Choosing the 256626 model ensures compatibility with Graco Reactor equipment and maximum pressure ratings for demanding applications. Installation is straightforward, offering a high-flex addition to your fluid delivery path.
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Technical Specifications

  • Hose length: 6 ft (1.8 m)
  • Inside diameter: 1/4 in (6.3 mm)
  • Maximum fluid working pressure: 3,500 psi (24 MPa / 241 bar)
  • Fitting sizes: one end “-5 JIC” female and other end “-6 JIC” male (as per spec table)
  • Covered with proprietary butyl cover for moisture-sensitive isocyanate protection

Frequently Asked Questions

Service & Support

Will using the 256626 unheated whip hose affect chemical temperature control compared to a heated whip?

The Graco 256626 unheated whip hose is designed without active heating, so it will not maintain elevated fluid temperature like a heated version. If your application demands maintaining fluid temperature within strict parameters, you may need a heated whip hose instead.

Can I connect the 256626 whip hose to any fitting on my Reactor proportioner manifold?

The 256626 uses different fitting sizes on the isocyanate and resin hoses to prevent mixing or wrong connections. Ensure your manifold connectors match the “-5 JIC/-6 JIC” specification to guarantee proper installation.

Is the hose suitable for overspray or structural foam applications with extreme chemical/abrasion exposure?

The 256626 is built for high-pressure use (3,500 psi) with protective butyl cover for moisture-sensitive isocyanates, but for extremely abrasive or very high-pressure applications (e.g., above 3,500 psi) a different specification (such as 5,000 psi rated) might be more appropriate.
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