There are a variety of options and accessories for pressure gauges and pressure transducer/transmitters that are designed to address specific application requirements, and ensure safe operation and installment.
Liquid filling in a pressure gauge reduces the effects of mechanical vibration and pressure pulsation, and can dampen pressure spikes during operation making the gauge pointer easier to read. Many NOSHOK gauges are available with liquid filling options. The standard fill is Glycerin, and optional fill liquids include Dow Corning 200® Silicone and Halocarbon®.
Piston snubbers protect a gauge, transducer, or transmitter from pressure pulsation and pressure spikes. This type of snubber resists clogging and is self-cleaning. Five different sized pistons are included with each snubber to ensure the correct amount of snubbing for virtually every application. Brass snubbers and 316 Stainless Steel Snubbers are available.
Sintered snubbers are another cost effective solution to protect expensive instrumentation. Sintered snubbers increase gauge readability by smoothing out pressure surges, pulsations and spikes. Multiple elements can be chosen for each snubber to accommodate specific application needs such as gases, water, light oil and heavy oil. Exotic materials or intermediate disc grades are available. Snubbers provide long service life with no moving parts to wear out.
Steam syphons protect the gauge, transducer, or transmitter from the damaging effects of high temperature steam, and are recommended for use in all steam applications. Available in 1/4" and 1/2" NPT sizes in welded steel, welded 316 Stainless Steel or seamless 316 Stainless Steel with ratings to 3,800 psi @ 850 ºF.
Diaphragm seals are designed to isolate and/or protect pressure gauges, pressure transducers and pressure transmitters from corrosive, viscous, contaminated or very high temperature process media. View NOSHOK's Diaphragm Seal offering.
Needle valves can provide block and bleed function for a pressure sensor in the system. Good industry practices state that a pressure measurement device should be “blocked in or have a block and bleed feature” for safety and ability to service the instrument. See all NOSHOK Needle Valves.
Maximum Indicating Pointers (MIP) are valuable tools for identifying pressure spikes in a system, especially during system start up. MIPs add an additional ±1% error to the gauge due to the increased load on the Bourdon tube.
Press-fit or threaded orifices in Brass or 316 Stainless Steel are available on all NOSHOK pressure gauges. They are available with I.D.’s from 0.004” to 0.032” depending on the specific NOSHOK gauge. Orifices are used in a gauge to restrict the flow of rapidly increasing and decreasing pressures, reducing the immediate effect of pulsations and pressure spikes. Recommended for all dynamic applications