Page 88 - GRINNELL Mechanical Products Catalogue

vALvES
Model 308 Butterfly Valves
(Page 1 of 2)
Tech Data Sheet: G320
The Model 308 Butterfly Valve provides dependable, long- term service and superior control of fluid flow in piping systems . Flow may be from either direction, and the valve may be positioned in any orientation .
The valve is furnished with grooved ends for use with grooved couplings . The body and disc design provides exceptional flow characteristics and low operating torque . The disc has a streamlined profile that optimises flow . The body is lined with an elastomer seat that is reinforced with a phenolic backing ring, reducing seat distortion, and wear .
The Model 308 Butterfly Valve includes a gear operator with adjustable stops at the open and shut positions .
The maximum Working Pressure is 1,034 kPa (150 psi) with 316 S .S . Stem and 1,379 kPa (200 psi) with 416 S .S . Stem . Special order is available upon request: Vacuum Service to 750mm (29.5") Hg .
C J
G
A H
B DE
Pipe Size
Dimensions - mm Inches
Approx. Weight kg lbs
Nominal mm Inches
O.D. mm Inches
A
B
C
D
E
F
350
355.6
590.6
273.1
254.0
533.4
331.7
387.4
171.8
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14 14.000
16 16.000
18 18.000
20 20.000
24 24.000
23.25
24.75
25.75
27.25
30.12
10.75 10.00
12.50 10.00
14.00 10.00
15.00 10.00
16.75 10.25
21.00 23.50 25.00 27.50 32.00
13.06 14.33 15.40 16.38 18.26
15.25 16.75 17.75 18.25 21.12
378.0 452.0 548.0 728.0 1097.0
400
406.4
628.7
317.5
254.0
596.9
364.0
425.5
205.5
450
457.2
654.1
355.6
254.0
635.0
391.2
450.9
249.1
500
508.0
692.2
381.0
254.0
698.5
416.1
463.6
330.9
600
609.6
765.0
425.5
260.4
812.8
463.8
536.4
498.6
For information on larger sizes, contact GRINNELL Mechanical Products.
ValVes