Novent Refrigerant Locking Caps 1/4″ Thread 410A, Heat Pump 3 Pack

Original price was: $26.99.Current price is: $10.99.

Clothing Size Conversion Chart
Category US EU UK Chest (in) Waist (in) Hips (in)
Men XS 44 34 32-34 26-28 33-35
S 46 36 34-36 28-30 35-37
M 48 38 38-40 32-34 39-41
L 50 40 42-44 36-38 43-45
XL 52 42 46-48 40-42 47-49
Women XS 32 6 31-32 24-25 33-34
S 34 8 33-34 26-27 35-36
M 36 10 35-36 28-29 37-38
L 38-40 12-14 37-39 30-32 39-41
XL 42 16 40-42 33-35 42-44
Youth XS 128 7 26-28 23-24 26-28
S 134 8 28-30 24-25 28-30
M 140 10 30-32 25-26 30-32
L 146 12 32-34 26-27 32-34
XL 152 14 34-36 27-28 34-36
Pants Size Conversion Chart
CategoryUSEUUKWaist (in)Hip (in)Inseam (in)
Men284428283430
304630303631
324832323832
345034344033
365236364234
Women0324243430
2346253530
4368263631
63810273832
84012284032
Shoes Size Conversion Chart
CategoryUSEUUKFoot Length (in)
Men6395.59.25
7406.59.625
8417.510
9428.510.25
10439.510.625
114410.511
124511.511.25
134612.511.625
Women5352.58.5
6363.58.875
7374.59.25
8385.59.625
9396.510
10407.510.25
11418.510.625
12429.511
M (Unisex)5374.58.75
6385.59
7396.59.5
8407.510
9418.510.25
10429.510.625
114310.511
124411.511.25
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Description
Novent? Tamper-Resistant Refrigerant Locking Caps 410A, Heat Pump 3 Pack



Refrigerant theft has been a well-known problem for years. However, an even larger problem is that most refrigerant is not being taken for resale, but is being consumed as a drug. Unfortunately, the ‘high’ or ‘rush’ and individual gets from ‘huffing’ is from the oxygen being displaced in their body. This has resulted in documented cases of brain injury and even death to individuals.

Developed as a simple yet effective way to deter misuse, reduce venting and energy loss, provide protection from serious injury or liability and meet the new industry code. Novent? locking caps seal standard service valves on Central A/C , Heat Pump and Mini Split Systems. They cannot be installed or removed without the special ‘key’ or applicable screwdriver tool. Novent products are available color-coded for R22 or R410 refrigerants.


Novent Caps meet section 1101.10 of the 2009 International Mechanical Code (IMC) and section M1411.6 of the 2009 International Residential Code(IRC) – the requirement of the refrigerant circuit access ports located outdoors to be fitted with locking-type tamper-resistant caps.