
Sentai Gas
25lb R-422D Refrigerant
$17.96 / lb
SKU 40-422D · Taxes calculated at checkout
A 25 lb cylinder of R-422D, an R-22 service replacement formulated to run on the system's existing mineral oil.
In stock, ready to ship
Secure checkout with Stripe — card details never reach this site
Questions before you order? Call +1 (509) 938-2763
- Free shipping — United States
- 90-day returns on unopened, factory-sealed cylinders, cans and accessories
- 30-day defect & leak replacement
Processing & shipping
Orders leave the warehouse in 1 business day (Mon–Fri), and transit is 1–3 business days (Mon–Fri) once the carrier has the cylinder.
Shipping is free on every order, to United States only — we do not ship internationally. One delivery address per order; place a second order for a second site.
In stock: R-1234yf, R-134a, R-22, R-404A, R-410A, R-449A, R-32, R-407A and R-407C — ready to ship.
Safe & secure checkout
- VISA
- Mastercard
- Amex
- Discover
- Apple Pay
- Google Pay
Payment is processed by Stripe. Card details are entered on Stripe’s own checkout and never reach this site. The methods offered are confirmed at checkout.
- Delivery
- Ships in 1 business day (Mon–Fri), arrives in 1–3 business days (Mon–Fri). Free on every order, no minimum. United States only — cylinders cannot go to a PO box or a parcel locker.
- Returns
- 90 days from delivery on unopened, factory-sealed cylinders, cans and accessories. No restocking fee. Refunds within 7 business days of inspection. Opened or partially used refrigerant cannot be returned.
- Warranty
- 30-day defect & leak replacement — a leaking or damaged valve, a cylinder that will not hold pressure, or the wrong refrigerant or fill weight. Inspect within 72 hours of delivery.
Product details
R-422D is another of the R-22 retrofit blends that avoids an oil change — the system keeps the mineral oil already in the compressor, which is what makes a changeover a service call rather than a strip-down.
Do not confuse it with R-422B, which this catalogue also carries. They are different blends with different pressure–temperature behaviour and they are not interchangeable just because the numbers are adjacent. Check which one the system was retrofitted with before adding to an existing charge; mixing refrigerants gives you a mixture whose properties are nobody's published data.
Charge as a liquid and verify superheat against R-422D's own figures.
Highlights
- 25 lb cylinder
- R-22 service replacement
- Works with existing mineral oil
- Not interchangeable with R-422B
- Liquid charge only
At a glance
| Refrigerant | R-422D |
|---|---|
| Cylinder size | 25 lb |
| Shipping weight | 36.0 lb |
| Brand | Sentai Gas |
| Part number (MPN) | 40-422D |
More R-422D

R-134a · 30 lb · EPA 608
30lb R-134a Refrigerant, Automotive, 1/2 ACME
Regular price $349.00$11.63 / lb
In stock

R-22 · 30 lb · EPA 608
30lb R-22 Refrigerant, Virgin – Made in USA
Regular price $559.00$18.63 / lb
In stock
3 packR-134a · 12 oz · ×3
R-134a Refrigerant – 3-Pack (12oz Self-Sealing Cans) with Gauge, MVAC Use
Regular price $35.00$15.56 / lb
$11.67 each
In stock
3 packR-134a · 12 oz · ×3
R-134a Refrigerant – 3-Pack (12oz Self-Sealing Cans), MVAC Use
Regular price $49.00$21.78 / lb
$16.33 each
In stock