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Pressure Accessories
Enhance the performance and longevity of your pressure measurement instruments with our reliable pressure accessories. Designed to protect gauges, transmitters, and switches from pressure spikes, pulsations, and harsh...
Categories in Pressure Accessories - Syphons, Snubbers & Test Plugs (4)
Coil SyphonsExtend the life of your pressure instruments with our durable coil siphons. Designed to act as a protective barrier, coil siphons help cool process media and prevent direct exposure of hot gases or liquids to pressure gauges, switches, and transmitters. This ensures more accurate readings and longer instrument service life. Available in a range of materials, sizes, and pressure ratings, our coil siphons are ideal for use in steam systems, boilers, chemical processing, and other high-temperature applications. Their coiled design dissipates heat efficiently while providing a reliable seal between process media and sensitive instruments. Built with rugged construction and trusted-brand quality, our coil siphons deliver dependable performance and are an essential accessory for protecting pressure measurement equipment in demanding environments.
Related categories: Pressure Accessories | Pressure Snubber | Test Plugs & Accessories | Gauge Cock Valves
Gauge Cock ValvesImprove safety and extend the life of your instruments with our dependable gauge cock valves. Designed to provide easy isolation of pressure gauges and switches, these valves allow for quick removal, inspection, or replacement without disrupting your system. Available in a variety of materials, pressure ratings, and connection types, our gauge cock valves are commonly used in boilers, steam systems, chemical processing, and industrial equipment. They provide a secure shutoff while helping protect sensitive instruments from overpressure, damage, or unnecessary wear. With rugged construction, simple operation, and trusted-brand reliability, our gauge cock valves deliver long-lasting performance and peace of mind in demanding applications.
Related categories: Pressure Accessories | Test Plugs & Accessories | Coil Syphons | Pressure Snubber
Pressure SnubberProtect your instruments and ensure accurate readings with our durable pressure snubbers. Engineered to reduce pulsations, spikes, and rapid pressure fluctuations, snubbers safeguard gauges, switches, and transmitters from damage while delivering smoother, more reliable measurements. Our selection includes brass, stainless steel, and porous metal snubbers, available in a variety of connection types, pressure ratings, and orifice sizes to match your application needs. Ideal for pumps, compressors, hydraulic systems, and industrial process equipment, pressure snubbers are a simple, cost-effective way to improve instrument performance. With rugged construction and trusted-brand quality, our pressure snubbers provide long-lasting protection, extended instrument life, and dependable accuracy in demanding environments.
Related categories: Pressure Accessories | Coil Syphons | Test Plugs & Accessories | Gauge Cock Valves
Test Plugs & Accessories
Test plugs let technicians take pressure and temperature readings on the spot without draining the system. Self-sealing cores accept probes and reseal when removed.
Products Available
- PT test plugs – brass and stainless bodies
- Extended-length plugs – reach through insulation
- Neoprene and Nordel cores – suit fluid and temperature
- Test kits – gauge adapters and thermometers
Choosing Test Plugs
Select core material and length for your system. Use matching probes to avoid damaging cores.
Nisco supplies test plugs and accessories.
Related categories: Pressure Accessories | Coil Syphons | Gauge Cock Valves | Pressure Snubber
Filters 185 Results
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Swivel Adapter are used with gauges and gauge valves to adjust the line of sight. The swivel adaptor rotates 360º to allow the connected instrument to be positioned in the desired direction and has temperature ratings of 15,000 psi at 200 ºF and 3,000 psi at 1,000 ºF. The pressure connection is achieved with a tapered cone style compression fitting simply by tightening the swivel hex nut.
Save 12%$102.04
$89.74
In Stock (186)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$98.84
$76.40
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$62.68
$55.12
In Stock (46)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$62.68
$55.12
In Stock (46)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$41.84
$36.80
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$41.84
$36.80
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 34%$41.84
$27.46
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$41.84
$32.34
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$41.84
$32.34
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 24%$32.01
$24.24
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$32.01
$24.75
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (20)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (20)Ships within 1 business day
Ametek/US Gauge 173428 Brass 1/4" NPT Pressure Snubber 5,000 psi - Air and Gases
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173429 Brass 1/4" NPT Pressure Snubber 5,000 psi - Water, Steam, Gasoline, and Light Oils
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173430 Brass 1/4" NPT Pressure Snubber 5,000 psi - Lubricating and Heavy Oils
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173431 Brass 1/2" NPT Pressure Snubber 5,000 psi - Air and Gases
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173432 Brass 1/2" NPT Pressure Snubber 5,000 psi - Water, Steam, Gasoline, and Light Oils
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173433 Brass 1/2" NPT Pressure Snubber 5,000 psi - Lubricating and Heavy Oils
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173434 Stainless Steel 1/4" NPT Pressure Snubber 15,000 psi - Air and Gases
$65.20
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Swivel Adapter are used with gauges and gauge valves to adjust the line of sight. The swivel adaptor rotates 360º to allow the connected instrument to be positioned in the desired direction and has temperature ratings of 15,000 psi at 200 ºF and 3,000 psi at 1,000 ºF. The pressure connection is achieved with a tapered cone style compression fitting simply by tightening the swivel hex nut.
Save 12%$102.04
$89.74
In Stock (186)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$98.84
$76.40
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$98.84
$86.92
In Stock (49)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$62.68
$55.12
In Stock (46)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$62.68
$55.12
In Stock (46)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$41.84
$36.80
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$41.84
$36.80
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 34%$41.84
$27.46
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$41.84
$32.34
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$41.84
$32.34
In Stock (219)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 24%$32.01
$24.24
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 23%$32.01
$24.75
In Stock (73)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (20)Ships within 1 business day
Cost effective solution to protect expensive instrumentationIncreases gauge readability by smoothing out pressure surges, pulsations and spikes5 basic elements available for each snubber to accommodate specific application needsSnubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous elementExotic materials or intermediate disc grades availableProvides long service life with no moving parts to wear out
Save 12%$32.01
$28.16
In Stock (20)Ships within 1 business day
Ametek/US Gauge 173428 Brass 1/4" NPT Pressure Snubber 5,000 psi - Air and Gases
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173429 Brass 1/4" NPT Pressure Snubber 5,000 psi - Water, Steam, Gasoline, and Light Oils
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173430 Brass 1/4" NPT Pressure Snubber 5,000 psi - Lubricating and Heavy Oils
$47.39
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173431 Brass 1/2" NPT Pressure Snubber 5,000 psi - Air and Gases
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173432 Brass 1/2" NPT Pressure Snubber 5,000 psi - Water, Steam, Gasoline, and Light Oils
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173433 Brass 1/2" NPT Pressure Snubber 5,000 psi - Lubricating and Heavy Oils
$94.78
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
Ametek/US Gauge 173434 Stainless Steel 1/4" NPT Pressure Snubber 15,000 psi - Air and Gases
$65.20
Should ship between 17 Nov and 24 Nov
Subject to factory lead times
FAQ
- Snubbers (dampen pressure pulsation), syphons (cool steam before it hits the gauge), gauge cock valves (isolate the gauge for service or replacement), pressure-and-temperature test plugs (let you spot-check pressure with a portable gauge through a sealed port), overpressure protectors, manifolds, and seals. Most installations use at least one accessory; pulsating or high-temperature service usually needs several.
- Anytime the process has fast pressure pulses that would shake the gauge to death: reciprocating pumps, compressors, downstream of fast-acting valves, and on any line with pressure spikes. The snubber dampens the pulses so the gauge needle stops bouncing and the internal mechanism lasts much longer. Cheap insurance - a $15 snubber saves a $200 gauge.
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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.