Manufacturer: NOSHOK, Inc.
Brand: NOSHOK
Model: 25-500-30/160-Ammonia
![NOSHOK 500 Series Stainless Steel Liquid Filled Ammonia Dial Indicating Pressure Gauge with Bottom Mount, 2-1/2\](http://ecx.images-amazon.com/images/I/41BBvPW73lL._SL110_.jpg "NOSHOK 500 Series Stainless Steel Liquid Filled Ammonia Dial Indicating Pressure Gauge with Bottom Mount, 2-1/2\") |
The NoShok 400 series pressure gauge has stainless steel 316 wetted parts, a dry, fillable, or liquid-filled circular dial enclosed in a stainless steel 304 case, a lower mount or center back male connection, and measures pressure with a single scale with an accuracy of + or - 1%, 1.5%, or 2.5%. The stainless steel 316 wetted parts and the stainless steel 304 case provide corrosion resistance. The gauge measures pressure with a single psi or Hg. vacuum scale. The dial comes in 1.5" (40 mm), 2.5" (63 mm) diameters, 4" (100 mm), and 6" (152 mm) diameters. The dial can be dry, dry/fillable, or liquid filled, depending upon the model. The specifications for each type of gauge vary according to the gauge size. The dial lens comes in three different forms of transparent materials for strength and clarity. The lens on the 1.5" and 4" diameter dials is instrument glass. The lens on the 2.5" diameter dial is transparent polyamide. The lens on the 6" dial is laminated safety glass. The dial is white aluminum with black markings and is UV resistant. The pointer type varies depending upon the dial size. The 1.5" dial has a black finished aluminum pointer. The 2.5" and 4" dials have a balanced aluminum pointer with a black finish. The 6" dial also has a balanced aluminum pointer with a black finish, and it is micrometer-adjustable.Gauge accuracy varies according to gauge size. The 1.5" dial is accurate to + or - 2.5% over the entire range of the gauge, American Society of Mechanical Engineers (ASME) B40.100 Grade B accuracy class. The 2.5" gauge is accurate to + or - 1.5% over the entire range of the gauge, ASME B40.100 Grade A accuracy class. The 4" and 6" gauges are accurate to + or - 1% over the entire range of the gauge, ASME B40.100 Grade 1A accuracy class. All gauges come with either a lower mount or center back connection. The connection for the 1.5" gauge is a 1/8" NPT (National Pipe Thread) rate. The connection for the 2.5" gauge is a 1/4" NPT rate. The connection for the 4" and 6" gauges is a 1/2" NPT rate. The move...
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![PIC Gauge 204L-404N Glycerin Filled Industrial Front Flanged Panel Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 4\](http://ecx.images-amazon.com/images/I/51Tg5cRecdL._SL110_.jpg "PIC Gauge 204L-404N Glycerin Filled Industrial Front Flanged Panel Mount Pressure Gauge with Stainless Steel Case, Brass Internals, Plastic Lens, 4\")
