Honeywell 310143 Packing Cone

The Honeywell 310143 Packing Cone is a critical 1/4-inch black rubber component engineered specifically for stem sealing in pneumatic valve assemblies. As a veteran technician knows, maintaining the integrity of the valve stem seal is essential for preventing leaks and ensuring precise flow control in VP513 and VP517 pneumatic series. This part is functionally identical to the Honeywell 310143/U, providing a universal fit for high-pressure water and industrial applications. Designed for heavy-duty HVAC valve repair, these cones must be installed in sets; exactly 3 required per valve to effectively seat the stem and handle the 250 psi body rating common in these systems. When performing a Honeywell pneumatic valve repacking, ensuring a clean stem and using the correct 1/4-inch rubber cone is the only way to maintain the 250°F maximum temperature rating and prevent expensive system downtime. These OEM replacement valve packing parts are the standard for contractors managing legacy Honeywell pneumatic hardware.

Key Benefits:

• Precision Compatibility: Specifically designed for VP513A, VP513B, and VP517A pneumatic valves.
• High-Pressure Ready: Engineered to withstand the demands of water systems with ratings up to 250 psi.
• Direct OEM Replacement: Identical performance and dimensions to the 310143/U universal part number.
• Durable Rubber Construction: Optimized for longevity and a tight seal at temperatures up to 250°F.

Common Questions:

How many 310143 packing cones are needed for one valve?
For a complete seal, you must use 3 Honeywell 310143 packing cones per valve body.

Is the 310143 compatible with older VP513 models?
Yes, this 1/4-inch cone is the standard pneumatic valve repair part for the entire VP513 and VP517 series, including older "A" and "B" variants.

Can I use these for steam service?
While these are high-temperature rubber, always verify your specific valve's media rating; they are primarily utilized for high-pressure water systems and compatible pneumatic liquids.

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.