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
Blue low-side HVAC gauge, 2-3/4 inch dial, 600 psi

Dayton

Dayton 4PDK6 HVAC Control Low Side Blue 600 psi

SKU CH-WHTJ-X56S9

Low-side HVAC pressure gauge reads 30 in Hg to 600 psi for R-22, R-404A, R-410A and R-407C systems

  • ColorBlue
  • Low-side monitoring up to 600 psi working pressure
  • Compatible with R-22, R-404A, R-410A and R-407C refrigerants
  • 30 in Hg vacuum range supports deep evacuation
  • Blue colour coding identifies low-side gauge instantly
  • 1/8 in NPT male connection fits standard manifold sets

Low-Side Gauge for R-22, R-404A, R-410A, R-407C

This Dayton 4PDK6 is a replacement low-side pressure gauge built for HVAC manifold sets. The blue dial covers a working range from 30 in Hg vacuum up to 600 psi and is calibrated for R-22, R-404A, R-410A and R-407C refrigerants. Technicians servicing residential or light-commercial systems use it to monitor suction pressure during charging, evacuation and diagnostics.

Check Thread and Scale Before Installing

Verify that your manifold block accepts a 1/8 in male NPT connection so the gauge threads in without adapters. Confirm the refrigerant scale printed on the dial matches the refrigerant in the system you are working on; using the wrong scale gives inaccurate readings. Ensure the gauge lens is clean and the needle rests at zero before you connect to the service ports.

Replaces Worn or Damaged Low-Side Gauges

Swap this in when the original low-side gauge leaks, reads off-zero or has a cracked lens that obscures the scale. The upgrade is worth it if the old gauge no longer holds vacuum or the blue colour code has faded, making quick identification harder. It restores accurate low-side readings without replacing the entire manifold set.

Highlights

  • Low-side monitoring up to 600 psi working pressure
  • Compatible with R-22, R-404A, R-410A and R-407C refrigerants
  • 30 in Hg vacuum range supports deep evacuation
  • Blue colour coding identifies low-side gauge instantly
  • 1/8 in NPT male connection fits standard manifold sets

Specifications

BrandDAYTON
ColorBlue

Questions about this item

Does the Dayton 4PDK6 gauge ship with any hoses or manifold fittings, or are those separate purchases?

The listing covers only the low-side gauge itself; hoses, manifold blocks and any adapters must be sourced separately.

My system uses R-410A — is this blue 600 psi gauge the correct version for that refrigerant?

Yes, the gauge is rated for R-22, R-404A, R-410A and R-407C, so it matches R-410A service work.

When I hook this gauge to a running R-410A unit, what pressure range will the needle actually show?

The scale reads from 30 in Hg vacuum up to 600 psi, covering the full low-side operating envelope for the listed refrigerants.

More in HVAC Controls

Similar items

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