| RHN |
8N |
4N |
E |
| Types of fittings |
1st end pipe thread size & type |
2nd end pipe thread size & type |
Material |
| Reducing Hex Nipple |
1/2" NPT |
1/4" NPT |
SS316 |
| NH |
4N |
4RT |
E |
| Types of fittings |
1st end pipe thread size & type |
2nd end pipe thread size & type |
Material |
| Hex Nipple |
1/4" NPT |
1/4" BSPT |
SS316 |
| Specifications |
Type |
Part No. or Suffix Designation |
Sealing Method |
NPT ANSI B1.20.1 |
M/F |
N |
Seal is made on the thread. Thread sealant is
required |
ISO 7/1 BS 21 JIS B0203 DIN 2999 |
M/F M/F M/F Male |
RT |
Seal is made on the thread. Thread sealant is required |
| Specifications |
Type |
Part No. or Suffix Designation |
Sealing Method |
ISO 228/1+2 BS 2779 JIS B0202 |
Male |
RP |
Metal to metal sealing to DIN 3852, Form B |
ISO 228/1+2 BS 2779 JIS B0202 |
Male |
RS |
Utilizes a sealing washer to provide sealing. reference DIN
3852, Form A |
ISO 228/1+2 BS 2779 JIS B0202 |
Female |
RG |
Sealing form meets DIN 3852, Form Y |
| BS 2779 ISO 228+ 1/2 with Elastic Sealing |
Male |
EO |
Sealing form meets DIN 3852, Part2, Form E |
| SAE J514 |
Male |
SAE |
Sealing with 'O' Ring |
| SS316 |
E |
| SS316L |
EL |
| 'O' Ring Viton |
V |
| 'O' Ring Buna |
N |
| Viton ® is the registerd
trademark of Dupont |