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Home > Palmer > Pressure Gauges > All Stainless Steel Pressure Gauges > 4" All Stainless Steel Industrial Pressure Gauges

4" All Stainless Steel Industrial Pressure Gauges
Model Number 40SS

Durable and corrosion resistant, our Stainless Steel gauges are made to provide maximum protection in harsh conditions.
  • Built-In Over-Range and Under-Range Protection
  • Welded Socket to Case on 6"
  • Reinforced Sector Improves Accuracy Over Life of Gauge
  • 4" & 6" Gauges Come with Removable Stainless Steel Restrictor

Case: AISI 304 Stainless Steel in 2-1/2" (63 mm), 4" (100mm), and 6" (150mm) diameter. Case and socket welded together on 6" gauges.

Fill: Glycerine Filled or Dry, (Dry gauges can be filled). Silicone optional on 4" and 6" gauges.

Ring: AISI 304 Polished Stainless Steel, Bayonet Connection on 25SS, 40SS, and 60SS. Crimped Bezel Ring on 25CS.

Window: Instrument Glass. Safety Glass optional on 4" and 6" gauges

. Socket: AISI 316 Stainless Steel. Ranges over 200PSI on 4" and 6" gauges come with removable Stainless Steel Restrictor. No restrictor on 2-1/2" gauge.

Connection: 1/4" on 2-1/2", 1/2" NPT on 4" and 6", Optional 1/2" F to 1/4" M NPT SS Adaptor.

Bourdon Tube: All Pressure Sensing Elements are AISI 316 Stainless Steel. All 2-1/2" gauges less than 600 PSI, and 4" and 6" gauges less than 1000 PSI range use a C-tube configuration. All other gauges use a spiral tube.

Movement: Stainless Steel.

Pointer: Balanced Black Aluminum. Micrometer adjustable in 25SS, 40SS, and 60SS only.

Dial: White Aluminum with black markings in accordance with ASME B40.1 -2005.

Range Availability: PSI, Metric, and Dual Scales. See information on pg 9.

Process Fluid Temperatures: 212F (100C) maximum for standard tube and socket materials.

Overpressure Limits: As a percent of full scale value:
o 30% for ranges up to 870 PSI (60 Bar).
o 25% for ranges from 870 to 1400 PSI (100 Bar).
o 15% for ranges above 1400 PSI (100 Bar).
Overpressure in excess of these values may affect calibration but will not damage the movement due to the mechanical stops.

Temperature Errors: For a normal temperature of 68 F (20 C) approximately +0.3% error for a temperature increase of 18 F and -0.3% error for a temperature decrease of 18 F (10C). Refer to order matrix for dual scale codes.


Call 1-800-421-2853 or e-mail us for specific availability.



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    Palmer Wahl Instrumentation Group
    234 Old Weaverville Road
    Asheville, NC 28804
    828-658-3131    800-421-2853

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