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Solenoid valve, Solenoid, Manifold, 2-way valve, Valve
Text version of the page
| engineering information | |||||||||||||
| SOLENOID VALVES | |||||||||||||
| ENGINEERING MATERIALS The choice of materials used depends on the type of fluid to be controlled. Bodies are made of machined brass, bronze, thermoplasts, stainless steel or nickelized brass or bronze. Seals - diaphragms are chosen according to mechanical, thermal and chemical requirements. NBR is the standard material for use with neutral chemically fluids at temperatures up to 90°C. At higher temperatures, EPDM, FPM and PTFE can be used. In some cases (high temperature and high cycling rate) stainless steel can also be used. Characteristics of sealing materials NBR • high mechanical durability • resistant to oil and grease • tight shut-off • temperature range: -10°C to +90°C • fluids: water, fuel, mineral oil, air, argon, town gas, methane, propane, buthane EPDM • resistant to acids and lyes of medium concentration • non-resistant to oil •tightshut-off • temperature range: -40°C to +130°C • fluids: hot water, wet steam, ozone, ethylene and methylene alcohol, acids and lyes FPM • excellent chemical resistance • mechanical durability lower than NBR or EPDM • tight shut-off • temperature range: -15°C to +200°C • fluids: hot and oiled air, acids, lyes and other fluids that do not allow use of NBR or EPDM PTFE • resistant to almost all chemicals • non-resilient, shut-off with slight leakage • temperature range: -200°C to +250°C • fluids: various chemicals, refrigerants, ammonia, dry steam | |||||||||||||
| ELECTRICAL CHARACTERISTICS All coils are designed for coninuous duty (ED100%). Exceptions are marked on individual coil or valve types. Wire inulation is class F (155°C)or H (180 or200°C). Voltage tolerance is ±10% at AC and ±5% at DC. Power consumption is stated in watts (W) and equals: - the product of measured DC voltage and current - the product of measured AC voltage and current multiplied by 0.6 Thermal conditions When the coil has been energized for a period of time the temperature of the winding rises. Amount of heating is affected by ambient and fluid temperature. In extreme cases the overheating causes damage to the wire insulation and the coil becomes defective. Special coils for extreme thermal conditions are also available. | |||||||||||||
| Cat. 11 | |||||||||||||
| 4 | |||||||||||||