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Stainless steel industrial vacuum gauge with 2.5 inch white dial and bottom NPT connection

Ashcroft

Ashcroft 251009SW02LVAC Industrial Vacuum Gauge measurement tool

SKU CH-9NZR-V34XR

Industrial vacuum gauge with 2½-inch dial, ±1.0% accuracy, 304 stainless steel case, ¼ NPT bottom connection, IP54/IP65 rated

  • Color and finishStainless Steel
  • Product typeElectronic
  • +/- 1.0 % accuracy for precise vacuum readings
  • 304 stainless steel case resists corrosion in harsh environments
  • IP54 vented and IP65 sealed ratings protect against dust and water
  • 2 1/2 inch dial with white face for clear visibility
  • 1/4 inch NPT male bottom connection fits standard process lines

Industrial Vacuum Gauge for Precise Monitoring

The Ashcroft 251009SW02LVAC is an electronic vacuum gauge designed for industrial pressure measurement. It provides a primary pressure range of 30 to 0 with an accuracy of +/- 1.0 percent. The instrument suits technicians and engineers who require reliable vacuum readings in process systems.

IP54 and IP65 Rated Stainless Steel Case

The gauge case is constructed from 304 stainless steel with a metallic finish, offering IP54 protection when the vent plug is open and IP65 when closed. A polycarbonate lens protects the white dial. The bottom-mounted 1/4 inch NPT male connection allows direct installation into existing piping.

Field Fillable Design with No Dampening

This model is not field fillable and includes no dry dampening feature or vibration resistance. The fixed configuration means the gauge arrives ready for immediate deployment without fluid handling. Operators should note the lack of dampening if the application involves pulsating pressure conditions.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $74.99
Pricier than about 58% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameASHCROFT
Color and finishStainless Steel
Product typeElectronic

Questions about this item

How do I install the gauge using the 1/4 in NPT male bottom connection without stripping the threads?

Apply PTFE tape or thread sealant to the 1/4 in NPT male threads, then hand-tighten into the female port before using a wrench on the 304 stainless steel case flats for a final quarter turn; over-tightening on the case body is the common error that damages the IP54/IP65 seal.

What maintenance will the gauge need after extended service in a vacuum system?

The polycarbonate lens and 304 stainless steel case can be cleaned with mild solvent; the unit is not field-fillable and has no dampening fluid, so no fluid replacement is required — verify the +/-1.0% accuracy against a reference standard annually.

At what point does the IP rating become the limiting factor during continuous operation?

If the vent plug is left open the gauge meets only IP54, so sustained wash-down or condensation ingress will breach the seal first; keep the plug closed to maintain IP65 and NEMA 4 protection during prolonged exposure.

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