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20 Best R12 To R134A Retrofit Valve of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best R12 To R134A Retrofit Valve of 2023. Check our ranking below.

2,415 Reviews Scanned

Rank No. #1

R-12 To R-134a Retrofit Valve 7/16 Low Side Port Adapter with Blue Dust AC Cap Universal for Air Conditioning Systems

[PREMIUM QUALITY] This r12 to r134a conversion made of Aluminum alloy + rubber seal, 100% tested before shipping.
[FITMENT] Professional grade retrofit valve adaptor for automotive air conditioning systems converting from R-12, R-22 to R-134A Quick Disconnect Coupler.
[SIZE] R-12 to R-134a Retrofit Valve Low Side Connection: 1/4" SAE (7/16''- 20) x 13 mm.
[FUNCTION] Completed with a 13mm low side port, Valve core and Blue Dust Cap.
[PACKAGE INCLUDE] 1Pc x R12/R22 to R-134a Retrofit Low side adapter, 1Pc x AC Cap.

Rank No. #2

A/C Retrofit Valve Kit-Refrigerant Retrofit Valve Set, with R12 to R134A Low Side Adapter, BPV31 Bullet Piercing Valve, for HVAC Refrigerant System R12 R22 R502 R134A

【A/C Retrofit Valve Kit】The a/c recharge valve kit includes：1 pieces r22 to r134a low side adapters with dust cap, 1 pack BPV31 bullet piercing tap valve (with 1 piercing valve, 1 hex key, 2 adapters)
【R12 to R134A Retrofit Conversion Adapter】The ac retrofit valve with blue dust cap with 7/16'' low side port can convert from R12, R22, R502 to R134a
【BPV-31 Bullet Piercing Tap Valve】The bpv31 piercing valve is compatible with 1/4inch, 5/16inch, 3/8inch outside diameter pipes. And the bullet piercing tap valve can replace the part model of AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31
【Premium Material】The r12 to r134a retrofit conversion fitting is made of premium brass and the BPV-31 bullet piercing tap valve is made of zinc alloy, which make the retrofit valve kit durable for long-time use to meet your daily repair work need
【Wide Application】The a/c recharge valve kit usually used for automotive or home air conditioning refrigerant systems. Suit for vehicles pre-1994, comes with R-134a refill fittings

Rank No. #3

R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit 1/4’’ to 7/16"-20 UNF Conversion Adapter,Fits for AC Air Conditioner Refrigerant

【A/C Adapter】 - The AC fitting port adapter retrofit r12 to r134a is completely used to replace R12 R22 with R134A charging port 1/4" SAE or 7/16”-20UNF adapter, perfect air conditioning conversion adapter kit.
【PREMIUM QUALITY】 - R12 to R134A retrofit fast conversion adapter kit are made of high quality metal and plastic, solid construction for high heat resistance, durability and safety.
【A/C VALVE CORES】-Applies to the replacement refrigerant valve core leak.These accessories can bear the oil, bear the impact, bear the corrosion, watertightness
【DIMENSION】 - These Low/High side retrofits/adapters/fittings will convert your old 1/4’’ SAE or 7/16"-20 UNF R12 R22 charging port and make it accept the R134a quick disconnect hose. Low Side, 1/4’’(7/16’’- 20) x 13 mm (Blue). High Side, 1/4’’(7/16’’- 20) x 16 mm (Red).
【PACKAGE INCLUDES】- 1 Pcs x Blue Low Side Quick Coupler, 1 Pcs x Red High Side Quick Coupler ,1Pcs Valve Core Remover,2Pcs Seal Caps,4Pcs R12 Valve Cores,2Pcs R134a Valve Cores.

Rank No. #4

Gisafai 4 Pcs R12 to R134a Conversion Kit 90° High/Low Side R12 to R134a Retrofit Adapter Fittings High/Low Pressure R12 to R134a Retrofit Valve Fittings with Dust Cap for Auto A/C Refrigerant System

Enough Quantity: you will receive 2 pieces of 90° low side R12 to R134a convert adapter with dust cap, 2 pieces of 90° high side retrofit adapter with dust cap, sufficient quantity bring you more convenient for replacement
Quality Material: our 90° R12 to R134a retrofit adapter fittings are made of brass material, safe and efficient, sturdy and long lasting, the precise internal construction ensures a tight sealing, high heat resistance, corrosion resistance, rust resistance, can be applied for a long period of time
Proper Thread Size: the low side R12 to R134a conversion adapter is about 1/4''(7/16''-20) x 13 mm (blue cap); High side R12 to R134a conversion adapter is about 1/4'' (7/16''-20) x 16 mm (red cap); Easy to be installed, time saving and effort saving
Wide Compatibility: these low and high side adapters will convert your old 1/4" SAE or 7/16''- 20UNF R12 R22 charging port and make it accept the R134a quick disconnect hose, bring you more convenient for replacement
Easy to Install: AC fitting conversion adapter can be paired with R134a quick coupler adapter, saving time and effort when installing, lightweight and quick, is the ideal tool for maintenance personnel

Rank No. #5

R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit 1/4’’ to 7/16"-20 UNF Conversion Adapter, Fits for AC Air Conditioner (A/C Adapter Valve Core Kit)

【WIDE COMPATIBLITY】 - The AC fitting port adapter retrofit r12 to r134a is completely used to replace R12 R22 with R134A charging port 1/4" SAE or 7/16”-20UNF adapter, perfect air conditioning conversion adapter kit.
【PREMIUM QUALITY】 - R12 to R134A retrofit fast conversion adapter kit are made of high quality metal and plastic, solid construction for high heat resistance, durability and safety.
【EASY INSTALLATION】 - R12 to R134A retro fit fittings connect to the thread for use with the valve, there is a removable schrader valves., fitted with a plastic protective cover cap, easy and fast installation.
【DIMENSION】 - These Low/High side retrofits/adapters/fittings will convert your old 1/4’’ SAE or 7/16"-20 UNF R12 R22 charging port and make it accept the R134a quick disconnect hose. Low Side, 1/4’’(7/16’’- 20) x 13 mm (Blue). High Side, 1/4’’(7/16’’- 20) x 16 mm (Red).
Package Includes: 1 Pc x Blue Low Side Quick Coupler. 1 Pc x Red High Side Quick Coupler. 1 Pc x 13mm Blue Cap. 1 Pc x 16mm Red Cap,4Pcs x Valve Cores for R134A System. 4Pcs x Valve Cores for R12, R22 System. 1Pc x Valve Cores Tool.oning Seal Repair Kit

Last update on 2025-07-07 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: Why is there a difference between R12 and R134a?

A: The reason you need to calculate is the weight difference between the two. R12 is heavier than R134a and has smaller molecules. Comparatively, larger R134a molecules should take more space, and a smaller amount might be required. You can use the R134a retrofit capacity chart for this purpose.

Q: How to convert a vacuum pump to R134a?

A: Start the vacuum pump and open both high and low valves on the manifold gauge. Allow the pump to run for around an hour. After the pump has run for enough time, close all the three valves and switch the vacuum pump off. Connect the R134a refrigerant can lead to the yellow hose.

Q: How can I add R134a to my Refrigerator?

A: Put the thermometer at the center to measure the temperature so that you can add or remove R134a. Connect the T valve to the lower side port and open it. Allow the refrigerator to drain for five minutes and check the inside air temperature.

Q: How to connect R134a refrigerant to yellow hose?

A: Connect the R134a refrigerant can lead to the yellow hose. Now open the lower side valve in order to allow the passage of oil. You must add the exact amount of oil as required. You can refer specifications manual for this.

R12 To R134A Retrofit Valve