FLANGED GLOBE VALVE
Globe Valves; operate as opening and closing procedure by pressing and releasing the plug connected to end of the plug spin on to the flow cross section. Flow direction should go only one way. Globe valve must be preferred in case of the pressure flow opened to atmosphere since the force obtained by the spindle press the plug on to the seat helps sealing.
1. Bonnet gasket
4. Seat gasket
Sealing from body to atmosphere is provided by one piece bonnet gasket (wire knitted Graphite gasket or Graphite).
Sealing from the spindle to atmosphere is provided by the stuffing comprised rings.
For clean, neutral or agressive fluids
For gas fluids
Hot and cold water facilities
Hot oil facilities
Machinery manufacturing etc.
Design Pressure : 16 bar - 25 bar - 40 bar
RSSB - BELLOWS SEALED FLANGED GLOBE VALVE
Bellows sealed globe valves have enhanced outer sealing capability when compared to standard globe valves. Stainless steel bellow has to be broken in order to allow any external leakage. There is also a stuffing box as a secondary sealing around the valve spindle, which should eliminate leakage to atmosphere for a limited period.
Internal sealing of the valves achieved as same as in gland type globe valves. Metal plug sits over a metal seat.
Fluids like thermal oils or any application where the external leakage to atmosphere should cause contamination and/or create severe risks on health and safety instructions, bellows sealed valves should be the best choice as an isolation valve.
Advantages & cautions
• Superheated water
• LPG, pressured air
• Boiled oil
• Miscellaneous types of gauges (e.g oxygen, hydrogen, nitrogen)
• Heat transfer oils
• Asbestos free
• Reliable, leak-tight shut off-in line and the atmosphere
• Unique robust construction principle
• No wear on sealing surfaces
• Insensitive to impurity
• Long service life and optimised life cycle costs
• Excellent regulation of flow
• Maintenance free
• Valve remains in line if replacement of seat rings and internal parts are necessary
Fields of Operation
• District heating
• Energy producing
• Steel production
• Production of tobacco
• Food and beverage
• Pulp and paper
The Sealing System
A stainless steel piston enclosed by two resilient valve ring forms the sealing system. The sealing area is the surface of the piston. The upper valve ring ensures tightness against the atmosphere, while the lower valve ring provides sealing across to ports.
Diameter DN 15-300 (1/2"-10")
Pressure PN 16 - PN 25 - PN 40
Temperature 400°C max
Material GJL250 Cast Iron
0.7040 Ductile Iron
1.0619 Cast Steel
1.4408 Stainless Steel
Connection Type Flanged DIN EN 1092-2
Screwed DIN EN ISO 228-1 Socket DIN EN 12760
Butt Welded DIN EN 12627
External Dimension Flanged DIN EN 558/1.seri
Screwed DIN EN 3202-4/M9 Socket DIN EN 3202-4/M9
Color Cast Iron - Grey
Ductile Iron - Brown
Cast Steel - Dark Blue
Stainless Steel - Metalic