Chemical Resistance of Pump Materials
The recommendations listed on the following page are based upon information from material suppliers and careful examination of available information and are believed to be accurate. However, since the resistance of metals, plastics, and elastomers can be affected by concentration, temperature, presence of other chemicals and other factors, this information should be considered as a general guide rather than an unqualified guarantee. Ultimately the customer must determine the suitability of the pump used in various solutions.
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Chemical Resistance of Plastic Resins
The results shown herein are typical results that have been obtained in laboratory tests using bars molded from typical lots of resin. These results are for natural colors only. The addition of additives may alter some results.
In addition, design, processing methods and equipment, environment and other variables may affect actual part performance.
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Chemical Resistance of Various Elastomers
The following pages are offered as a general guide and inspection of the suitability of various elastomers in use today for service in these chemicals and fluids. The ratings are based, for the most part, on published literature of various polymer suppliers and rubber manufacturers but, in some cases, they are the considered opinion of experienced compounders. We cannot guarantee their accuracy nor assume responsibility for use thereof. Several factors must always be considered in using a rubber part in service.
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MODEL Q-16 The “Harwil” Model Q-16. Maximum Reliability at Minimum Cost.
The Q-16 is the newest addition to Harwil’s heavy-duty line of flow switches. The switch is used to signal, start, or stop electronically operated equipment when flow or no-flow conditions occur. The Q-16 benefits from 40 years of flow switch development experience for every conceivable application.
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HIGH PRESSURE FLOW METER:
The SF800/6 is the high-pressure version of the SF800 with extra metal enclosure. With an operating pressure of 250 bar and burst pressure of 750 bar, it is perfect for more demanding and high stress environments while retaining the versatility and other qualities of the SF800.
The inside of the sensor is similar to the SF800, and is made of high-quality plastics and composites with great chemical and thermal resilience and no susceptibility to limescale.
An integrated PCB emits the infrared signal, which is interrupted by the three blades of the rotor. SMD components transform the interrupted signal into a pulse. Because of the construction and geometry of the rotor housing, the Swissflow flow sensors can withstand high pressure.
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Harwil Corporation’s wide range of liquid level switches provide level control solutions for many industries including chiller, scrubber, carpet cleaning machinery, water treatment, fluid handling and truck/automobile wash industries.
Harwil flow switches have provided reliable solutions for many industries including chiller, scrubber, geothermal, water treatment, boiler, carpet cleaner, pool and spa industries.
Wetted materials ranging from red brass, 316 stainless steel, Hastelloy® C-276-276, Noryl® (PPO), and Fortron® (PPS) accommodate fluids from pure water to strong acids and bases.
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GP:50 has developed into a state of the art facility providing pressure instrumentation for industrial pressure application solutions in Aerospace, Melt pressure, Automotive test, Petrochemical, Sub-sea, Sanitary, & hydraulic & pneumatic control.
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