Page 94 - GRINNELL Mechanical Products Catalogue

vALvES
Model TD830 Triple Duty Valves
Tech Data Sheet: G390
The Model TD830 Triple Duty Valve is designed for installation in pump discharge piping where it functions as a spring-loaded silent check valve, a balancing valve, and a shut-off valve .
The Model TD830 Triple Duty Valve operates automatically and quietly . Line pressure of approximately 1 .7 kPa (0.25 psi) opens the disc . To prevent flow reversal and water hammer, the spring closes the disc as the line flow approaches zero
in order . The flow through the valve can be adjusted from bubble tight shut-off to full-flow by the threaded rising stem .
MATERIAL SPECIFICATIoNS Body & Yoke
• Ductile iron conforming to ASTM A 395, Grade 60-40-18 or A 536
Disc
• Aluminum bronze ASTM B 142, C 950
Disc Guide & Flanged Gland
• Cast iron conforming to ASTM A 126-B
Spring
• 302 stainless steel
Stem
• Type 316 stainless steel
Stem Guide
• Ductile iron conforming to ASTM A 536 or A 395
o-Rings
• EPDM
Seat
• Bronze
Seat Guide
• Bronze conforming to ASTM B 584 (81-3-7-9)
Finish
• Black paint
Performance
• Pressure Drop, contact GRINNELL Mechanical Products.
The Model TD830 Triple Duty Valve can be installed quickly into grooved end piping systems using two GRINNELL Couplings . The externally guided disc has a soft seat to ensure a leak-tight seal . It lifts 8mm (1/3") for each 25 .4mm (1") of pipe diameter . The rising stem design incorporates
a graduated position indicator to ensure accurate disc positioning for throttling service .
The yoke and valve stem are unwetted external parts so they cannot be corroded or eroded by the line fluid . All mating threaded parts are made of dissimilar, non-galling metals . An NPT drain plug is provided, as well as bosses for gauge taps at the inlet and outlet .
Maximum working pressure is 4,413 kPa (640 psi) at 38°C (100°F) and 3,896 kPa (565 psi) at 149°C (300°F) .
Note: Pressure and temperature can be limited by gasket material. Contact GRINNELL Mechanical Products.
B
A
C
Pipe Size
Dimensions - mm Inches
Approx. Weight kg Lbs.
Nominal mm Inches
O.D. mm Inches
A
B OPEN
C NPT
50
60.3
238.1
244.5
15
10.0
2 2.375 2-1⁄2 2.875 3 3.500 4 4.500 5 5.563 6 6.625 8 8.625
10 10.750
9.38 9.63 10.25 9.63 11.25 10.13 15.63 12.63 15.625 11.125 19.63 17.50 23.63 18.00 28.00 21.75
1⁄2 23.0 1⁄2 24.0 1⁄2 33.0 1⁄2 84.0 1⁄2 84.0 3⁄4 156.0 3⁄4 300.0
1 392.0
1 496.0
1 790.0
65
73.0
260.4
244.5
15
10.9
80
88.9
285.8
257.2
15
15.0
100
114.3
397.9
320.8
15
38.0
125
141.3
397.9
282.6
15
38.0
150
168.3
498.5
444.5
20
70.0
200
219.1
600.0
457.2
20
136.0
250
273.1
711.2
552.5
25
178.0
300
323.9
803.3
635.0
25
225.0
12 12.750 31.63 25.00
14 14.000 33.50 25.000
340
355.6
851.0
635.0
25
358.3
For information on larger sizes, contact GRINNELL Mechanical Products.
94
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