BOC Cylinder adapter & connector
| Brand: | Aircon Tools |
| Product Code: | boc-connector |
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£11.99 VAT incl.
Available Options
Many R134a gas cylinder supplied by BOC or Linde (but it is a quite common adapter for refrigerants HFC, Chlorine, Hydrogen Chloride ) has a bottle neck connector marked as BS341 No.6.
Although this is just a British standard but BOC doesn't mention its thread features.
We offer 2 options:
* BS341 No.6 G5/8"-14 BSPP Female RH to 1/4" SAE Male Adaptor
* DIN 477 No.1 W21.8 × 1/14 Female LH to 1/4" SAE Male Adaptor
RH is a standard right-handed thread just like the 80% of the threads on earth. So the BOC bottle neck has a 5/8" male outlet and most of the HVAC - air conditioning tools have the normal 1/4" flare threads. In order to connect these two you will need a 5/8" female to 1/4" SAE flare male adapter which we offer here in this listing.
GASKET IS INCLUDED WITH THE FITTINGS!
This fitting is also identified by "diameter" such as 21.8mm
We also offer the same adaptor with LEFT HAND thread for A2L refrigerants. You need to select which adapter you need.
| Adaptor / Cylinder Connection | Supplier | Refrigerant | Cylinder Size | Refrigerant / Application Remark |
|---|---|---|---|---|
|
BS341 No.6 / BS6 G5/8"-14 BSPP Right-Hand (RH) Approx. male thread OD: 22.9 mm Typical female adaptor minor diameter: approx. 21 mm |
BOC UK | R134a | 9.6 kg | A1 non-flammable HFC. Automotive A/C, refrigeration and general air-conditioning. |
| BOC UK | R134a | 29 kg | Larger R134a service cylinder. | |
| BOC UK | R134a | 65 kg | Large-capacity R134a cylinder. | |
| BOC UK | R404A | 9 / 23 / 53 kg | A1 non-flammable HFC blend. Commercial refrigeration. | |
| BOC UK | R407A | 11 / 27 / 61 kg | A1 non-flammable HFC blend. | |
| BOC UK | R407C | 9 / 27 / 60 kg | A1 non-flammable HFC blend. Common in air-conditioning and heat-pump systems. | |
| BOC UK | R407F | 10.5 / 26 / 59 kg | A1 non-flammable HFC blend. | |
| BOC UK | R410A | 9.8 / 24 / 55 kg | A1 non-flammable HFC blend. Widely used in split A/C and heat pumps. | |
| BOC UK | R417A | 12 / 26 / 60 kg | A1 non-flammable HFC replacement refrigerant. | |
| BOC UK | R422D | 11 / 27 / 61 kg | A1 non-flammable HFC replacement refrigerant. | |
| BOC UK | R437A | 11.5 / 28 / 63 kg | A1 non-flammable replacement refrigerant. | |
| BOC UK | R438A | 11 / 27 / 61 kg | A1 non-flammable HFC blend. | |
| BOC UK | R449A | 10.5 / 59 kg | A1 low-GWP HFO/HFC blend. Common replacement for R404A/R507. | |
| BOC UK | R452A | 10 / 59 kg | A1 HFO/HFC blend. Often used in transport refrigeration. | |
|
DIN 477 No.1 / DIN1 W21.8 × 1/14" Left-Hand (LH) Nominal male thread OD: 21.8 mm Typical female adaptor minor diameter: approx. 20 mm |
BOC UK | R32 | 9 kg | A2L mildly flammable HFC. Used extensively in modern split A/C and heat pumps. BOC specifies a DIN1 cylinder adaptor for R32. |
| BOC UK | R32 | 50 kg | Large-capacity R32 cylinder. DIN1 adaptor required. | |
| Linde | R32 | 9 kg | A2L mildly flammable refrigerant. Linde specifies W21.8 × 1/14" LH DIN1. | |
| Linde | R1234yf | 5 kg | A2L mildly flammable HFO. Primarily used in modern automotive air-conditioning. Linde specifies W21.8 × 1/14" LH DIN1. | |
| Linde | R1234yf | 11 kg | Larger R1234yf cylinder. W21.8 × 1/14" LH DIN1 connection. |
Important: cylinder valve standards can vary by country, supplier and cylinder generation. Always check the thread and valve marking on the actual cylinder before connecting an adaptor. A G5/8"-14 BSPP RH BS341 No.6 connection is not interchangeable with W21.8 × 1/14" RH DIN 477 No.6, even though the threads look very similar.
