We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Stainless steel pneumatic vacuum gauge with white dial and polycarbonate lens

Ashcroft

Ashcroft 251009 Pneumatic Vacuum Gauge +/-1.00% Stainless Steel

SKU CH-RSW9-8CDWC

Pneumatic vacuum gauge measuring 30 to 0 range with ±1.00% accuracy in a 304 stainless steel case rated IP54 vented or IP65 sealed

  • Color/FinishStainless Steel
  • TypeElectronic
  • +/-1.00% accuracy ensures precise vacuum readings
  • 304 stainless steel case resists corrosion in harsh environments
  • IP54 vented and IP65 sealed ratings protect against dust and water ingress
  • 2 1/2 inch dial with white face provides clear visibility
  • 1/4 NPT bottom connection allows direct inline installation

Ashcroft 251009 Pneumatic Vacuum Gauge

The Ashcroft 251009 is a pneumatic vacuum gauge designed for industrial pressure measurement. It features a nominal dial size of 2 1/2 inches with a white dial and an accuracy of +/- 1.00 percent. The gauge case is constructed from 304 stainless steel with a metallic finish. A polycarbonate lens protects the dial face.

Suited for industrial vacuum monitoring

This gauge suits technicians and engineers who need reliable vacuum readings in industrial environments. The IP54 rating with the plug vented and IP65 with the plug closed provides protection against dust and water ingress. Buyers who require a filled gauge or a different connection orientation should look at alternative models. The primary pressure range covers 30 to 0.

Verify NPT connection and mounting

Before ordering, confirm that your system uses a 1/4 inch male NPT process connection at the bottom mounting location. The gauge is not field fillable, so consider this if your application requires liquid filling. Ensure the IP rating matches your environmental conditions with the vent plug open or closed. The case material is 304 stainless steel.

Highlights

  • +/-1.00% accuracy ensures precise vacuum readings
  • 304 stainless steel case resists corrosion in harsh environments
  • IP54 vented and IP65 sealed ratings protect against dust and water ingress
  • 2 1/2 inch dial with white face provides clear visibility
  • 1/4 NPT bottom connection allows direct inline installation

Specifications

BrandASHCROFT
Color/FinishStainless Steel
TypeElectronic

Questions about this item

What NPT thread size must my system provide for the 1/4 in process connection?

The gauge has a 1/4 in male NPT bottom connection, so your port must accept that thread.

Will the IP54 vented rating stay valid if I keep the plug closed for an IP65 seal?

Closing the plug upgrades the seal to IP65 and NEMA 4, so the gauge remains protected in wet environments.

How do I confirm the +/-1.00% accuracy is holding after installation?

Apply a known vacuum reference across the 30 to 0 range and verify the needle reads within 1.00% of full scale.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.