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Stainless steel mechanical pressure gauge with 4-1/2 inch dial and bottom NPT connection

Value Brand

Value Brand Pressure Gauge 4-1/2 In 18C743

SKU CH-WS21-V2NYJ

Mechanical pressure gauge with a 4-1/2 inch dial, stainless steel case, and ±1.0% accuracy

  • TypeElectronic
  • Accurate readings with ±1.0 % precision
  • Durable stainless-steel case resists corrosion
  • Clear 4-1/2 in acrylic dial for easy viewing
  • 1/4 in NPT male bottom connection fits standard fittings
  • Suitable for non-explosive gas or liquid media

Product Identity

The Value Brand 18C743 is a mechanical pressure gauge built for industrial monitoring tasks. Its 4-1/2 inch dial and bottom-mounted NPT connection suit panel installations where continuous local reading is required.

Upgrade Path

This gauge replaces smaller or lower-accuracy instruments when a +/- 1.0 percent tolerance is specified. The jump is justified when process media are non-explosive gases or liquids that do not crystallize or attack copper alloy components.

Build Integration

The stainless steel case and acrylic lens resist workshop environments while the 1/4 inch male NPT thread connects directly to existing fittings. Copper alloy wetted parts handle compatible media without a separate isolator, freeing panel space for other instruments.

Highlights

  • Accurate readings with ±1.0 % precision
  • Durable stainless-steel case resists corrosion
  • Clear 4-1/2 in acrylic dial for easy viewing
  • 1/4 in NPT male bottom connection fits standard fittings
  • Suitable for non-explosive gas or liquid media

Specifications

BrandZoro Select
TypeElectronic

Questions about this item

What size NPT fitting does the 1/4 in. bottom male connection require?

The gauge uses a 1/4 in. male NPT process connection at the bottom; match it with a 1/4 in. female NPT port or adapter for a proper seal.

Which way should the 4-1/2 in. dial face when tightening the copper-alloy socket?

Thread the 1/4 in. male NPT connection by hand first, then snug with a wrench on the copper-alloy HPb59-1 socket — do not force the stainless-steel case, or the acrylic lens may crack.

When should I replace the gauge if the copper-alloy sensor contacts non-explosive gas or liquid?

Replace the unit if the needle drifts beyond the +/- 1.0 percent accuracy spec, if the acrylic lens clouds, or if the copper-alloy sensor or socket shows corrosion from media that crystallizes or attacks copper alloy.

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