The Model 7705 Standard Flexible Coupling is a standard flexible coupling for use in a variety of general piping applications of moderate pressure services. The model 7705 couplings features flexibility that can deal with misalignment, distortion, thermal stress, vibration and noise and also resist seismic tremors. With the use of Model 7705 couplings you can even design a curved layout. All Model 7705 couplings are comprised of two identical ductile iron housings segments, EPDM rubber gasket and plated track bolts & nuts. Housings segments are supplied with hot dipped zinc galvanized finish. 7705 couplings should always be installed so that the coupling bolt pads make metal to metal contact.
Specifications
- Standard flexible coupling
- Orange painted ductile iron
- Available in sizes 1-1/4 in. to 8 in.
- Max temperature range -30°F to 230°F (-34°C to 110°C)
- Grade E pw-EPDM gasket approved under NSF/ANSI 61 & 372- *EPDM seat for water services are not recommended for steam services unless valves or components are accessible for frequent replacement
- Max working pressure: 1-1/4 in. to 4 in. 500 PSI, 5 in. & 6 in. 450 PSI and 8 in. 300 PSI
- Ductile Iron to ASTM A536, Gr. 65-45-12 and or ASTM A395, Gr.65-45-15, min. tensile strength 65,000psi
- Heat treated carbon manganese steel track bolts to ASTM A449-83a, minimum tensile strength 110,000 PSI w/zinc electroplated heavy-duty hexagonal nuts to ASTMA563.
- For potable water service to 180°F(82°C)
- Also good for services for water with acid, water with chlorine, deionized water, seawater and wastewater, dilute acids, oil-free air and many chemicals
- Not recommended for petroleum oils, minerals oils, solvents and aromatic hydrocarbons.
- 10 Year limited warranty
Downloads
Product Manual (PDF Download)
