Description
Dwyer A-251 Pressure Snubber Overview
The Dwyer A-251 is a 1/4″ brass pressure snubber designed to protect pressure gauges, switches, and transducers from damaging pressure spikes, surges, and pulsations. By dampening sudden pressure fluctuations before they reach sensitive instrumentation, the A-251 extends the service life of downstream components and helps maintain accurate, reliable readings in demanding HVAC, hydronic, and industrial applications.
Key Features
- 1/4″ connection size for compatibility with standard pressure instrumentation ports
- Brass construction for durability and corrosion resistance in a wide range of media
- Dampens pressure spikes and pulsations to protect gauges, switches, and transducers
- Compact, inline design for easy installation in tight spaces
- Helps extend the operational life of connected pressure instruments
- Suitable for use in HVAC, hydronic, refrigeration, and general instrumentation systems
Application
The Dwyer A-251 pressure snubber is ideal for installation upstream of pressure gauges, pressure switches, and pressure transducers in systems subject to water hammer, rapid pressure fluctuations, or pulsating flow. Common applications include boiler systems, chilled water loops, compressed air lines, and refrigeration circuits where instrumentation protection is critical.
Why Use a Pressure Snubber?
Pressure spikes and pulsations are a leading cause of premature gauge and sensor failure. Installing a snubber like the Dwyer A-251 between the process line and the instrument reduces mechanical stress on the Bourdon tube, diaphragm, or sensing element — minimizing maintenance costs and unplanned downtime.
Product Specifications
- Brand: Dwyer Instruments
- Model: A-251
- Connection Size: 1/4″
- Body Material: Brass
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