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AllTitanParts

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Titan 138498 Relief Valve Knob

Titan 138498 Relief Valve Knob

Sourced From:
Titan Tools Inc.

 

Titan part 138498 is a relief valve knob used to manually operate the pressure relief valve on compatible Helix FR and Helix VR sprayers. When the original knob becomes worn, cracked, or missing, it can make pressure relief difficult or impossible, creating safety hazards during maintenance. This knob restores proper valve operation and ensures safe pressure relief procedures.

Part Number 138498
Part Description Relief Valve Knob
Brand Helix
Fits Helix FR, Helix VR
Condition New

$4.66

 

Relief Valve Knob for Helix FR and VR Sprayers

The Titan part 138498 Relief Valve Knob is a manual control component designed for the pressure relief valve on Helix FR and Helix VR sprayers. This knob provides the operator with a secure grip to open the relief valve, safely releasing system pressure before maintenance, cleaning, or when the sprayer is not in use.

A missing or damaged relief valve knob can make it difficult or impossible to properly relieve system pressure, creating a serious safety hazard. Replacing with this genuine component ensures that pressure can be safely and easily released when needed, protecting both the operator and the equipment.

⚠️ Safety Warning: Always relieve system pressure before servicing, cleaning, or storing the sprayer. Never attempt to operate the relief valve without a properly functioning knob. A damaged or missing knob should be replaced immediately to maintain safe operating procedures.

What it does and when to replace it

What the relief valve knob does
Pressure relief Manual operation of the pressure relief valve
Operator safety Enables safe release of system pressure
Maintenance access Allows pressure relief before servicing
Ergonomic grip Provides comfortable, secure grip for operation
When replacement is recommended
Cracks or breaks Visible damage compromising knob integrity
Missing knob Original knob lost or removed
Worn grip Surface worn, making knob difficult to turn
Loose fit Knob no longer attaches securely to valve stem

Compatibility

Titan part 138498 is designed for use in Helix FR and Helix VR sprayer models. This relief valve knob is a direct replacement for the original component.

Model Series Component
Helix FR (all models) Relief Valve Knob
Helix VR (all models) Relief Valve Knob

Related parts commonly serviced together

When replacing the relief valve knob, these related valve components are often inspected or replaced to ensure complete system safety.

Relief valve assembly

The valve that the knob operates; inspect for proper function.

Valve stem

The shaft the knob attaches to; check for damage.

Mounting hardware

Any set screws or fasteners securing the knob.

Frequently Asked Questions

The relief valve knob provides the manual interface for opening the pressure relief valve, which releases trapped pressure in the fluid system. Proper pressure relief is essential before performing any maintenance, cleaning, or when the sprayer is not in use. A missing or damaged knob can prevent effective pressure relief, creating a risk of accidental fluid injection or component failure during service.

Signs that your relief valve knob needs replacement include: visible cracks or breaks in the knob material, the knob missing entirely, a worn grip surface that makes the knob difficult to turn, or a loose fit where the knob no longer attaches securely to the valve stem. Any of these conditions compromise your ability to safely operate the relief valve.

Yes, the 138498 relief valve knob is designed to fit both Helix FR and Helix VR models. While these series have different recovery systems, they share common relief valve designs and stem configurations, allowing the same knob to be used across both platforms.

Installation typically involves: 1) Ensuring the valve stem is clean and undamaged, 2) Aligning the knob with the valve stem, 3) Pressing or threading the knob onto the stem (depending on design), 4) Securing any set screws if present, and 5) Testing operation to ensure the knob turns smoothly and operates the valve. The knob should fit snugly without excessive play.

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