Ball valves
Reduced bore
MS 21.c.2.1 MS 21.s.2.1
TECHNICAL CHARACTERISTICS Working pressure, not higher than.....16bar(class B20), 25bar(class B25), 40bar(class B40) Working medium temperature..............from – 29°C to +180°C Working medium..............MS 21.c.2.1 water, gas, oil products and other nontoxic and nonaggressive medium, neutral for ball valve components MS 21.s.2.1 water, gas, oil products and other including aggressive medium and neutral one for ball valve components Environment temperature.....................not less than – 29°C Quantity of work cycles........................not less than 5000 Full lifetime............................................not less than 30 years Pipeline connection...............................welding ends Control means........................................handle End-to-end dimension...........................according to EN 12982 Welding ends..........................................according to EN 12627 Pressure tests.........................................according to EN 12266-1 Ball valve manufacturing......................according to EN 1983
DESIGNATION AND APPLICATION AREA Welding ends ball valves are designated for installation on the pipelines in water and gas supplying systems, for application in heat-power engineering and also in chemical, oil-refining, gas and other industries as a locking device fully blocking liquid and gaseous medium flow. Ball valves made of stainless steel can be used in food industry. The manufacturer has at his disposal a comprehensive informational background on the consequences of working medium influence on different types of materials and can offer its customers a type of ball valve that would fully correspond to all the specified parameters.
DESIGN Single body all-welded ball valve. Reduced bore. Welding ends design. All body component parts are joined by welding. Ball valve is maintenance-free. Design types: MS21.c.2.1 – made of carbon steel. MS21.s.2.1 – made of stainless steel. Free floating ball is sealed with teflon seats. Stem is protected from extrusion and sealed by teflon rings tightened by a press-on bush. Seats are pressed to the ball by spring washers. Teflon gaskets are used to seal the body component parts. Ball valve control is performed manually by turning a handle at an angle of 90˚ up to the full stop. Handle axis is parallel to bore axis so its position indicates ball valve “open” or “closed” state. Ball valve is intended to be installed on the pipeline in any position with working medium flow applied from any direction.
32
1 2 3 4 5
Body Ball Ends connection Stem Press-on bush
6
Ball seat
7 8 9 10 11 12
Seat ring Spring washer Stem seat Gasket ring Ring Handle
13
Nut
14
Washer
material MS21.c.2.1
material MS 21.s.2.1
P265TR1 1.0258 GX5CrNi19-10 1.4308 P265TR1 1.0258 X20Cr13 1.4021 C22E 1.1151
X6CrNiTi18-10 1.4541 Gx5CrNiTi19-10 1.4308 X6CrNiTi18-10 1.4541 X12CrNiTi18-9 1.4878 X12CrNiTi18-9 1.4878
PTFE
PTFE
St37-2 1.0037 60Si7 PTFE Rubber PTFE GP240GH1.0619
X12CrNiTi18-9 1.4878 X39Cr13 1.4031 PTFE Rubber PTFE GP240GH 1.0619
5 Zn (ISO 4034)
PRESSURE/TEMPERATURE RATING
50 Pressure, bar
MATERIALS LIST № part name
PN40
40 30
PTFE
PN25
20
PN16
10 -29
0
100 200 Temperature, °C
C20E 1.1121 (ISO 7089)
We reserve the right to make modification without prior notice.