Hankison 1701-3 Valve

The Hankison 1701-3 is a purpose-built bleed-type bypass valve designed specifically for refrigerated air dryers, allowing for critical system maintenance without requiring a complete process shutdown. Engineered to replace complex three-valve bypass manifolds, this integral unit features 3/8" tube dryer side connections and 3/8" NPT service side connections, significantly reducing installation footprint and potential leak points. The bleed-type design ensures that when the valve is switched to bypass mode, the downstream component?such as a Hankison HPR Series dryer?automatically depressurizes through an internal bleed hole, facilitating safer service conditions for the technician.

Constructed with a robust metal-to-plastic interface, the 1701-3 bypass valve is compatible with compressed air, inert gases, and liquids that do not degrade Nylon, Buna-N, or brass. It supports a maximum operating pressure of 200 psig and fluid temperatures up to 120°F. The compression fittings utilize reusable rubber ferrules, providing a reliable seal that remains fully rotatable during installation to accommodate tight piping configurations. This valve is indispensable for maintaining continuous compressed air treatment flow while servicing filter elements or dryer internals.

Key Benefits:

• Simplified Installation: Replaces bulky three-valve bypass systems with a single, compact unit, reducing brazing and fitting requirements.
• Automatic Depressurization: The bleed-type porting allows the dryer to vent pressure automatically when isolated, enhancing safety during maintenance.
• System Continuity: Permits servicing of individual HVACR components while maintaining downstream air or liquid flow to the facility.
• Durable Construction: Features Buna-N seals and brass components for reliable performance under standard industrial 200 psig environments.
• Rotatable Connections: Metal-to-plastic design allows 360-degree rotation of fittings, resolving alignment issues in cramped mechanical rooms.

Common Questions:

Q: How does the 1701-3 differ from the 1701-1 non-bleed model?
A: The 1701-3 bleed-type valve automatically vents the isolated component to the atmosphere via a bleed hole. In contrast, the 1701-1 keeps the bypassed component pressurized, requiring manual venting before service can begin.

Q: What are the specific connection sizes for this Hankison valve?
A: This unit is equipped with 3/8" OD tubing connections for the dryer side and 3/8" Female NPT ports for the main service lines.

Q: Is this valve compatible with fluids other than compressed air?
A: Yes, provided the media is compatible with brass, nylon, and Buna-N. It is commonly used in both refrigerated air systems and specialized liquid cooling loops.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.