STAINLESS STEEL
We are manufacturing engineers, working with all materials – Stainless Steel, however, is our speciality.
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Our fully-equipped workshop has CAD design, CNC machining, TIG welding shops, sheet metal fabrication with press facilities and a fully equipped mechanical and electropolishing metal finishing shop.
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We can handle any size or quantity of job, from initial concept development, through design (via Computer Assisted Design) to initial prototyping, manufacturing of “one-off” products or large production runs.
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In addition to our production shop, we offer a repair and modification facility: if your existing laboratory, cooking or other food-grade equipment isn’t performing, come in and discuss your requirements.
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Our toolmaking service focuses on press and punch dies, manufacturing both “from scratch” and offering die retooling and refurbishment.
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We are an outsourcing and outwork supplier to a variety of new Zealand businesses: our OEM production and finishing services include:
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Design-on-behalf
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Contract Machining (CNC turning, milling and programming all carried out in-house)
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Electro polishing – of parts made in our workshop or yours
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Press and Punching (all materials but with significant expertise in Stainless steels and Aluminium)
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Sheetmetal Fabrication
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Polishing: both mechanical polishing and/or in conjunction with electro-polishing
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We are keen to discuss your project, whether large or small, design-from-sketch or “just” manufacturing – or something else. The initial consultation will be at no charge and will be kept completely confidential.
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Need more information on our capabilities? Please see our FAQ (Frequently Asked Questions) or contact us.
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Ph: 07 849 3108
CHLORINATION
The Se-Tech Chlorinator accurately doses chlorine into low, medium and high pressure water systems.
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Low-level, ongoing chlorination of a water supply is effective against bacteria, virus and other pathogens. These are often factors on farms with Water Exclusion issues, and in areas where water quality needs improvement.
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Extremely low level, repeatable and accurate addition rates ensure safe, effective, low-cost water disinfection.
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The Se-Tech Chlorination system uses a 3-stage process to ensure dosing consistency across a wide range of water flows. Water pressure fluctuations have no effect on the system.
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Chlorine concentrations of between 5 and 50 parts per million (PPM) are easily acheived in this hands-off, safe injection system.
1.The system first uses a peristaltic pump, which is externally controlled.
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2. The pump loads a small amount of liquid chlorine into a calibrated cylinder. Chlorine dosage amount (relative PPM or parts per million) is controlled here.
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3. The calibrated volume of chlorine gets pre-mixed with a standard quantity of water – and this premixed solution is loaded into the water supply via the 2-32 Se-Tech dispenser.
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4. The (modified) Se-Tech Series 2-32 dispenser ensures accurate dosing.
OPERATION
INSTALLATION AND BENEFITS
The Chlorinator is suitable for installations with flows from 5 litres/minute up to 6000 litres/hour, and into pressures from “Gravity-feed” installations at 10 PSI to high-pressure runs up to 210 PSI.
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The combination of the proven Se-Tech dispenser, together with a hands-free peristaltic pump – responsible only for loading, not for dosing accuracy – and calibrated chlorine pre-mix/addition station, provides accurate and repeatable dosing at extremely low levels, regardless of water flow/pressure and ambient temperature fluctuations.
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Staff exposure to potentially dangerous chemicals is minimised, as chlorine is sucked directly out of its container – there is no manual mixing or handling of chemicals.
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Installation is simplified, as the unit is powered by a low-voltage plug-in pack.
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This means a certified electrician is not required to install the unit. The plug-in power pack is PAT (Portable-Appliance-Test) checked and certified before leaving our factory.
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As with all Se-Tech products, Singh’s Engineering Services proudly designs, manufactures and services Se-Tech Chlorinators in Hamilton, New Zealand.