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Stem Dampeners

An improved, more rugged method of damping turbulence, pulsations, and surges — preventing false actuation signals.

How Stem Dampeners Work

PEECO Stem Dampener

Identical in function to the Dash Pot (-DP) model but utilizing damping action on the stem itself with a special built-in, fully adjustable dampener. This model is particularly suited to the pulsating action of positive-displacement pumps.

Stem-Based Damping

Damping action applied directly to the stem — more rugged than external dash pot designs.

Fully Adjustable

Special built-in dampener is fully adjustable to match your specific flow conditions.

Prevents False Actuation

Eliminates false signals caused by turbulence, pulsations, and surges in the flow.

Positive-Displacement Pumps

Particularly suited to the pulsating action of positive-displacement pumps.

Stem Dampener vs. Dash Pot

Both options prevent false actuation from turbulent flow. The stem dampener applies damping directly to the stem mechanism, while the dash pot uses a separate pneumatic damping assembly. The stem dampener is generally more compact and better suited for pulsating pump applications.