Questions & Answers
Stainless steel taps are made from the following steel grades: 20Х23Н18, 10Х23Н18, 06ХН28МДТ, 08Х18Н10, 03Х17Н14М3, 10Х17Н13М2Т, 08Х18Н10Т, 12Х18Н10Т.
International Standards:
EN 12266 - Testing of Valves;
EN 12516 - Strength Tests for Valve Bodies;
ISO 5211 - Actuators for Pipeline Valves;
ISO 17292 - Metal Ball Valves.
GOST Standards:
GOST 12.2.063-2015 - Safety of Pipeline Valves;
GOST 5632-2014 - Heat-Resistant and Stainless Steel Grades;
GOST 6211-81 - Tapered Pipe Threads;
GOST 6357-81 - Cylindrical Pipe Threads;
GOST 33259-2015 - Pipe Flanges;
GOST 9544-2015 - Valve Tightness Classes;
GOST 5762-2002 - General specifications for pipeline valves;
GOST 21345-2005 - Steel ball valves.
For ball (coupling) stainless steel valves:
| DN | Thread size | Weight of 1 piece, kg |
| DN8 | 1/4" | 0.18 |
| DN10 | 3/8" | 0.22 |
| DN15 | 1/2" | 0.32 |
| DN20 | 3/4" | 0.48 |
| DN25 | 1" | 0.75 |
| DN32 | 1 1/4" | 1.15 |
| DN40 | 1 1/2" | 1.65 |
| DN50 | 2" | 2.45 |
| DN65 | 2 1/2" | 4.2 |
| DN80 | 3" | 6.1 |
| DN100 | 4" | 9.8 |
For flanged stainless steel valves:
| DN | Pressure | Weight of 1 piece, kg |
| DN15 | PN16 | 2.0 |
| DN20 | PN16 | 2.8 |
| DN25 | PN16 | 3.9 |
| DN32 | PN16 | 5.5 |
| DN40 | PN16 | 7.0 |
| DN50 | PN16 | 9.5 |
| DN65 | PN16 | 14 |
| DN80 | PN16 | 19 |
| DN100 | PN16 | 28 |
| DN150 | PN16 | 52 |
| DN200 | PN16 | 88 |