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| SMS manufactures single and double
ball air relief valve which is operated directly by the working fluid. Large venting
cross-section permits passage of large volumes of air for vacuum breaking and
venting on starting-up, closing-down, and other operating conditions.
Small
venting cross-section permits venting of small volumes of air under full internal
pressure without interruption of operation. | |
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Including rubber lined gate valve, which provides
perfect sealing for maintanence, double ball air relief valves have triple effect: - Exhaust
of air in large flow rates during filling of the line
- Inlet
of air in large flow rates during discharge of the line
- Continious
release of air by small orifice during operation
| | | | Diameter
range:DN 50-300 | | Flanges:
ISO 2531, DIN 2501 | | Pressure
Class: PN10, PN16, PN25
and PN40 | | Hydraulic
Test: BS 6755 | Test
Pressure:- Body :1.5
times of operating pressure
- Seat:
At operating pressure
| Valve
materials
| - Body
: Ductile Cast Iron, GGG40 or 50, DIN1693
- Cover:
Ductile Cast Iron, GGG40 or 50, DIN1693
- Ball:
Rubber lined steel ball
- Body seats:
Bronze
- Gate: Rubber lined ductile cast
iron, GGG40, DIN1693
- Shaft: Stainless
steel, X20Cr13, BS 970 Part 431S29, ASTM A 582 420
- Shaft
seaing: O'ring
- Handwheel: Ductile Cast
Iron, GGG40 or 50, DIN1693
- Coating &
lining: Exopy paint
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