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Each type of pressure snubber - porous, piston, and adjustable - has its own ideal applications based on the nature of the pressure fluctuations and the specific needs of the system.
Each type of snubber provides different levels of protection and adjustment, so selecting the right type depends on the specific characteristics of the pressure fluctuations and the environment in which the pressure switch is operating.
Here’s a breakdown of where each type would be ideally used:
1. Porous Snubbers
Applications with Moderate Pressure Pulsations - Porous snubbers are best used in systems where the pressure fluctuations are moderate and predictable. They are effective at smoothing out pressure spikes and providing a steady reading by filtering out high-frequency oscillations.
Clean Fluids/Gases - Suitable for applications where the fluid or gas is relatively clean. The porous material can become clogged over time if the medium contains particulates.
Example
Water or air systems with moderate pulsation, such as HVAC systems or water pumping stations.
2. Piston Snubbers
High Pressure Spikes and Pulsations - Piston snubbers are designed to handle higher pressure spikes and more severe pulsations. They work by physically absorbing and dampening pressure changes through a mechanical piston mechanism.
Dirty or Contaminated Fluids - They are often used in applications where the medium contains particulates or contaminants that could clog a porous snubber.
Example
Hydraulic systems or applications with high-pressure surges, like compressors or oil field equipment.
3. Adjustable Snubbers
Variable Pressure Conditions
Adjustable snubbers are suitable for systems where the pressure conditions vary widely or are not well-defined. They allow for customization of the damping characteristics to match the specific requirements of the application.
Flexible Applications
Ideal for systems where different operating conditions may be encountered, and fine-tuning of the snubber's response is beneficial.
Example
Industrial processes with fluctuating pressures, such as chemical manufacturing or processing plants where pressure conditions can change based on various factors.
Wika type 910.12 porous, piston, and adjustable pressure snubbers can be installed directly on the instrument to be protected.
Porous snubbers can be cleaned by back flushing with a commercial grade solvent.
Piston snubbers are generally self-cleaning, however they can be cleaned manually by removing the threaded cap inside the pressure port, then removing the piston. Metal parts should be cleaned in a commercial grade solvent.
Adjustable snubbers can be cleaned by backing the needle valve out from the body in a counterclockwise direction until it stops and back flushing the pressure port with a commercial grade solvent.