Grooved pipe fittings Ductile iron flexible coupling
Grooved rigid or flexible coupling
Specifications:Grooved Flexible coupling
| Name |
Grooved flexible coupling |
| Standard |
ANSI, ASTM, DIN, JIS, GB, BS, etc |
| Size |
1"-8" |
| Material |
Ductile Iron ASTM A536/QT450-10 |
| Surface Finish |
Paint Epoxy Powder or Galvanized |
| Color |
Red-RAL3000,Blue,Orange or as customer want |
| Working Pressure |
300 PSI/2.07 Mpa |
| Tensile Strength |
Min.Psi-65,000(Mpa-448) |
| Approval |
FM/UL/ISO |
| Usage |
1) Automatic sprinkler system for fire protection on commercial, civil and municipal constructions like water supplying, gas supplying, heat supplying, etc. |
2) Industrial pipeline system on shipping,mine,textile
oil field,powder plant, etc. |
| 3) Pipeline system on subway station, railway |
Rubber gasket data
| Gasket |
Name |
Tamperature range |
General service recommendations |
Color |
| E |
EPDM |
-34~+150ºC(-30~+230° F) |
Recommended for hot water service with specified temperature rang plus a variety of dilute acids,oil-free airand many chemical service with ANSI/NSF61 or cold +86° F(+30ºC)and hot +180º F(+82ºC)potable water service.not recommended for petroleum service |
Green strip |
| D |
NBR |
-29~+82ºC(-20~+180° F) |
recommended for petroleum products.air with oil vapors,vegetable and mineral oils within the specified temperature range.Not recommended for hot watefr service |
Orange strip |
| S |
Silicone |
-40~+177ºC(-40~+350° F) |
Recommended for high temperature dry air and some temperature chemical products |
White |
Bolts and Nuts
Raw material of bolt And nuts are taken as 40cr or 35# steel and its mechanical properties should reach Gr.8.8 after Hot-treatment.Only one wrench will be used during the installation,safely and firmly
| Bolt dimension |
M10 |
M12 |
M16 |
M20 |
M22 |
| Spanner dimension |
15 |
18 |
24 |
30 |
34 |
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