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Butterfly Valves, Control Valves, Valve Manufacturer, Pune, India

 
CONTROL VALVES
Butterfly Valves, Control Valves, Valve Manufacturer, Pune, India
 
The control application in pumping systems attracted Normex to come out with control Valves i.e. Butterfly Valves. The Normex Butterfly Valve superseded the Gate Valve, Ball Valve and Globe Valve in most spheres of applications. Gas tight sealing with excellent control characteristics and uni directional flow has qualified Normex Valves by most of the industries. The centrally mounted disc, shafts and bearings has minimised head loss. It’s low weight and compact design has achieved acceptability in industries like Chemical and Petrochemicals, Watertreatment, Agriculture and many

• Excellent flow control in quarter turn operation
• Low pressure drop
• Low weight, low maintenance, long service life
• 100% tight shut of

 
Salient Features
  • Excellent flow control in quarter turn operation.
  • Compact, space saving design.
  • Bi-directional1 00% tight shut off.
  • Low weight, low maintenance, long service life, Easy automation / retrofit possible.
  • Stream lined valve disc for lower pressure drop.
  • Both shafts mounted in bearing supports for easy operating torques.
  • Suitable for mounting between all standard flanges.
  • Gasket packing not required to install between flanges.
  • Sizes: 40mm to 400mm
 
Application
1. Water treatment plants
2. Water distribution systems
3. Power Stations
4. Chemical / Petrochemical Industries
5. Steel Mills
6. Sugar Factories / Breweries
7. Sewage Plants
8. Process Industries
9. Seawater and Brine Pumping
10. Food Processing Industries
11. Mining Industries
 
Parts list & Materials
 
Part
Description
Std. mode of construction
Options
1
Body
Cast Iron, GG - 25/ IS - 210 FG - 260/ BS - 1452 Gr. 260
SG Iron GGG 40 Cast Steel (WCB)
Stainless Steel CF8 / CF8M
2
Disc
SG Iron, GGG 40 IS - 1865 SG 400/12/ BS - 2789 Gr. 240/12
Cast Steel (WCB)
Stainless Steel CF8/CF8M
Aluminium Bronze IS 305 Gr2
3
Seat
EPDM
Black Nitrile, Neoprene, Viton, Silicon, Hypalon or as per customer's requirements.
4
Shafts
AISI 410
SS304/SS316
5
Bearings
Self lubricating
Phosphor Bronze
PTFE
6
'O' Rings
Nitrile
EPDM, Neoprene
7
Bush
Polyacetal (Delrin)
PTFE
8
Taper Pin
AISI 304/410
AISI 316
9
Plug
Carbon Steel
---
10
Hand Lever
MS
CI / SGI / SS
 
 
Dimension Chart
 
Size ( DN )
A
L
D
T
E
Wt(Kg)
40
33
55.5
101
240
2.1
50
43
64
111
240
2.8
65
46
72.5
121
240
3.4
80
46
79.5
128
240
3.6
100
52
99
147
240
4.6
125
56
115
159
240
6.3
150
56
128
173
330
8.7
200
60
156
199
330
12.2
250
68
212
248
500
25.0
300
78
239
270
-
32.0
350
78
260
321
-
64.5
400
100
298
345
69.4
450
108
326
373
-
-
 
Technical Data
 
Pressure Rating
PN 1.0 & PN 1.6 (KPa)
Pressure Testing
a) Body : 1.5 x PN
b) Seat : 1.1 x PN
Temperature
(-) 400C to 2000C
Face to Face Dimension
ISO - 5752 / IS - 13095/ BS - 5155
To suit flanges drilled as per
IS, ANSI, BS, DIN Standards.
Operation
Bi-directional
Painting
Epoxy coated
 
 
Technical Comparison
 
NORMEX BUTTERFLY VALVE & CONVENTIONAL GATE VALVE
Normex Butterfly Valve Conventional Gate Valve
Compact size, short in length saves space. Lower in weight. Bulky design, longer in length & higher in weight.
Can be used as On-Off as well partial opening or partial closing is possible. Can be used only as On-Off. Double flanged design. Flanges are required to be drilled for the specific standard.
Flangless - fits between two flanges of any standards like IS, BS or ASA.
No drilling selection is required. Any valve off-the-shelf can be used for any drilling standards.
Once drilled cannot be fit to other standard flanges. Hence off-the-shelf avalibility is poor.
Quarter turn operation - valve opening to closing position is just quarter turn.
Hence on-off operation very easy.
Multi turn operation - valve opening to closing requires at least 12 turns (depending on valve size) hence process is very tidious.
Any position of the valve viz, on, off or intermediate can be known visually. Valve position is not known especially in non rising spindle design.
100% leakproof over the life. Leakproofness not guaranteed.
As it fits between two pipe flanges, only one set of bolts is enough for installation. Two set of bolts are required for installation - one set for each flange.
Lower priced - saves your cost. Higher price.
 
 
 
 
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