Page 92 - GRINNELL Mechanical Products Catalogue

vALvES
Model 590 Grooved End Check Valves
(Page 1 of 2)
Tech Data Sheet: G350
GRINNELL Model 590 Check Valves are capable of pressures up to 2,068 kPa (300 psi). These valves are designed as compact and rugged swing-type units that
allow water flow in one direction and prevent flow in the opposite direction . They are manufactured with a ductile iron body, nickel seat, and a stainless steel clapper assembly for sizes 50mm – 200mm (2" – 8"), and a ductile iron clapper assembly for sizes 250mm – 300mm (10" – 12") . A resilient elastomer seal facing on the spring loaded clapper ensures a leak tight seal and a non-sticking operation . The Model 590 Check Valve is designed to minimise water hammer caused by flow reversal .
The valves are furnished with grooved ends and can be installed using GRINNELL Couplings . The Model 590 can be installed with GRINNELL Figure 71 Flange Adapters or ANSI class 300 Flange Adapters . All Model 590 Check Valves are designed with a removable cover for ease during field maintenance .
Seal Specifications
• Grade “E” EPDM seals have a green colour code identification and conform to ASTM D 2000 for service temperatures from -34°C to 110°C (-30°F to 230°F) . They are recommended for hot water not to exceed 110°C (230°F), plus a variety of dilute acids, oil free air, and many chemical services . They are not recommended for petroleum services .
• Grade “T” Nitrile seals have an orange colour code identification and conform to ASTM D 2000 for service temperatures from -29°C to 82°C (-20°F to 180°F) . They are recommended for petroleum products, vegetable oils, mineral oils, and air with
MATERIAL SPECIFICATIoNS
Ductile Iron Body & Cap Specifications
• ASTM A 536 – Standard specification for ductile iron castings, Grade 65-45-12
• Tensile strength, minimum 448,159 kPa (65,000 psi) • Yield strength, minimum 310,264 kPa (45,000 psi) • Elongation in 50mm (2"), minimum 12%
Seat
• Nickel
Coating
•Non-Lead paint
Performance
500
oil vapours .
FLOW RATE IN LITRES PER MINUTE (LPM) (1 GPM = 3,785 LPM)
5.0 4.0
3.0 2.0
1.0 0.9 0.8 0.7
0.6
0.5 100
0,30 0,20
0,10 0,09 0,08 0,07
0,06 0,05
700
1000
2000 3000
5000
7000 10000
20000
30000
50000
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200
300
400 600
FLOW RATE IN GALLONS PER MINUTE (GPM)
10000
0,04 15000
1000
2000 3000
4000
6000
2 INCH (DN50) 2-1/2 INCH (DN65)
3 INCH (DN80)
4 INCH (DN100)
5 INCH (DN125) 6 INCH (DN150)
8 INCH (DN200)
10 INCH (DN250) 12 INCH (DN300)
NOMINAL PRESSURE DROP
IN POUNDS PER SQUARE INCH (PSI)
NOMINAL PRESSURE DROP IN BAR (1 PSI = 0,06895 BAR)
ValVes