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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 7 min read · Independent comparison
• TrendPlain 16oz/470ml — biggest strength: a 2-in-1 glass bottle that both sprays a fine mist and pours a steady stream, with a light-blocking blue coating to help keep oil fresh.
• TrendPlain 16oz/470ml — biggest trade-off: it is a manual trigger sprayer, so you have to press repeatedly and prime it before the first good mist, and it is glass, so it wants careful handling.
• QXNASU Normally Open 2-pin — biggest strength: it is a purpose-built normally open 2-pin switch named specifically for the Salter Dual EK4750BLK 7.4L air fryer at 2400W, so it targets one job precisely.
• QXNASU Normally Open 2-pin — biggest trade-off: it does nothing for anyone who does not own that exact air fryer, and it is a single small part rather than a usable appliance on its own.
• Who each pick is for: TrendPlain is for cooks who want better oil control on salads, air fryer baskets and BBQ; QXNASU is for someone repairing or maintaining a Salter Dual EK4750BLK air fryer.
TrendPlain 16oz/470ml is a glass oil bottle with a dual personality. Press the trigger quickly and you get a fine mist; press it slowly and you get a steady stream. Push the spout open and it pours. That one design decision is what makes it useful across a whole cook session — a light mist over a salad, a controlled drizzle into a pan, a quick coating on vegetables headed for the air fryer basket. It holds 16oz / 470ml, stands about 7.21 inches tall with a 4-inch width, and comes in a glossy black cylindrical finish. In my opinion, the size hits a sweet spot: big enough that you are not refilling constantly, small enough to sit on the counter without dominating it.
The details around the bottle are where it earns its place. The exterior has a non-toxic, odorless dark blue coating that blocks light, which helps protect oil from spoilage — a real concern if you keep olive oil out on the counter rather than in a dark cupboard. The interior is uncoated, so the oil itself only touches glass. The spout uses a return design to cut down on dripping, and there is a built-in filter so only clean oil comes through. You also get eight waterproof labels — six pre-printed designs plus two blanks — so you can mark olive oil, avocado oil, vinegar or whatever else you decant. For a kitchen with several oils in identical bottles, that is genuinely handy rather than a gimmick.
Who should buy it? Anyone who cooks with oil regularly and is tired of glugging straight from a shop bottle — air fryer owners, salad people, grillers, meal-preppers watching how much oil goes in. Who should skip it? If you want a pressurized aerosol-style spray or you refuse to deal with a manual trigger, this is not that. Also skip it if you only ever use oil straight from the original container and never decant. One practical note from the specs: on first use you need to press the trigger several times to push out trapped air before you get a proper mist. That is normal for this kind of pump sprayer, not a defect.
QXNASU Normally Open 2-pin is a different animal entirely. This is a replacement switch — a normally open 2-pin type — named specifically for the Salter Dual EK4750BLK 7.4L air fryer rated at 2400W. It is not a gadget you cook with; it is the kind of small internal part you go looking for when a specific function on that specific air fryer stops working and you would rather repair than replace the whole appliance. The listing is refreshingly narrow about that: one unit, one count, one job. There is no ambiguity about what it is meant to fit.
Who should buy it? Someone who owns a Salter Dual EK4750BLK 7.4L air fryer, has diagnosed a faulty normally open switch, and wants a part that matches that model and wattage rather than a generic switch they have to hope fits. If you are comfortable opening up an appliance and swapping a component, this is the targeted, no-guesswork route. It also makes sense as a spare to keep on hand if you rely on that air fryer daily and do not want downtime.
Who should skip it? Almost everyone else. If you do not own that exact Salter Dual model, this part is not for you — a normally open 2-pin switch is not universal, and buying it "just in case" for a different fryer is a waste. If you are not comfortable doing your own repair, skip it too and look at service options instead. And if you were hoping this was a cooking accessory, it is not; it is a component, full stop. The honest framing is that this is a narrow-fit repair part, and its value is entirely tied to whether you have the matching machine.
Side-by-Side: Which Should You Choose?
• Best for everyday cooking → TrendPlain 16oz/470ml. It is a tool you use multiple times a day; the QXNASU switch is used once, during a repair.
• Best for air fryer owners generally → TrendPlain 16oz/470ml. A fine mist is genuinely useful for lightly coating food before air frying, and it works with any brand of fryer.
• Best for oil freshness and organization → TrendPlain 16oz/470ml. Light-blocking coating, an uncoated interior, a drip-reducing spout, a filter, and eight waterproof labels all point that way.
• Best for precision → TrendPlain 16oz/470ml. Quick press for mist, slow press for a stream; the QXNASU part has no "performance" to compare in that sense.
• Best for a one-time, targeted fix → QXNASU Normally Open 2-pin. If you have the matching air fryer and the diagnosis, this is the direct route.
• Best for gifting → TrendPlain 16oz/470ml. It suits almost any home cook; a model-specific switch only suits one person with one machine.
• Best value for most readers → TrendPlain 16oz/470ml, simply because it applies to far more kitchens. Check the current price on Amazon for both before deciding.
For the overwhelming majority of readers, I would buy the TrendPlain 16oz/470ml. It is a flexible, everyday kitchen tool — spray or pour, light-protected oil, labeled bottles, a drip-conscious spout — and it fits air fryer cooking, salads and BBQ alike. I would only choose the QXNASU Normally Open 2-pin if I specifically owned a Salter Dual EK4750BLK 7.4L air fryer and needed that exact normally open 2-pin switch to repair it. That is a real need, but a narrow one. If you fall into that group, buy the switch; if you are just cooking, buy the sprayer.
how to use salter air fryer
Load food in a single layer, set the time and temperature for your recipe, and let the unit run. For lighter oiling, a sprayer like the TrendPlain 16oz/470ml lets you mist food or the basket instead of pouring oil. Always follow the manual that came with your specific Salter model.
how to clean salter air fryer
Let the appliance cool completely, then remove the basket and any removable trays and wash them with warm soapy water. Wipe the main body with a damp cloth — never submerge the electrical section. Check your model's manual for which parts are dishwasher-safe.
how to preheat salter air fryer
Many air fryer recipes call for a few minutes of preheating at the cooking temperature before food goes in, which helps browning and even results. Run it empty for that short window, then add your food. Confirm the exact preheat time in your Salter manual, since it varies by model.
how to use salter air fryer for beginners
Start with simple, forgiving foods, keep batches small so air can circulate, and shake or turn food halfway through. Use a light oil mist rather than a heavy pour, and check doneness a little early the first time. Once you learn your model's quirks, timing gets much easier.
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