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Small black plastic pressure regulator knob with textured grip

PRESTO

PRESTO Pressure Regulator Knob 37603 for Regulator 9978

SKU CH-2GBH-F8EAR

Replacement pressure regulator knob restores proper pressure control for Presto canners using regulator 9978

  • OEM-compatible replacement restores safe canning pressure
  • Part 37603 fits Regulator 9978 exactly
  • Heat-resistant construction ensures long service life
  • Secure grip allows easy pressure adjustment
  • Direct-fit design fixes loose or cracked knobs

Direct-fit replacement knob

The Presto 37603 pressure regulator knob is an OEM-compatible part made for home canners who need to replace a worn or broken control on their existing equipment. It fits Presto pressure canners that use Regulator 09978 and restores the precise pressure adjustment required for safe food preservation.

Restores pressure control

A damaged knob can cause steam leaks, erratic pressure readings or difficulty seating and removing the regulator. This heat-resistant replacement eliminates those faults, letting the canner maintain the steady pressure levels that tested recipes depend on for safety.

Verify regulator number first

Check that your canner currently uses Regulator 09978 before ordering; the knob is engineered specifically for that regulator assembly. Confirm the model marking on your existing hardware to ensure the part will seat and function correctly.

How it compares

Measured against everything we stock in Food & Garment Steamers, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 99% of the 515 comparable items (median $48.99).

Specifications

No published specifications for this item yet.

Questions about this item

How often should the pressure regulator knob be replaced on a Presto canner?

Replace the knob if it becomes loose, cracked, or missing, as a worn knob prevents proper pressure control and causes inconsistent canning performance.

What is the first sign that the regulator knob needs attention during a long canning session?

Difficulty adjusting or removing the pressure regulator, or steam escaping due to improper regulator seating, indicates the knob is worn or damaged.

Does the knob get hot or require special handling during extended canning?

The knob features durable, heat-resistant construction designed for long service life and a secure, comfortable grip during operation.

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