--- product_id: 14206200 title: "Yellow Jacket 78075 Water Manometer" brand: "yellow jacket" price: "Β£51.95" currency: GBP in_stock: true reviews_count: 8 category: "Yellow Jacket" url: https://www.desertcart.co.uk/products/14206200-yellow-jacket-78075-water-manometer store_origin: GB region: United Kingdom --- # 10-inch precision length Strong magnet mount Made in USA quality Yellow Jacket 78075 Water Manometer **Brand:** yellow jacket **Price:** Β£51.95 **Availability:** βœ… In Stock ## Summary > 🧲 Measure with confidence, mount with ease! ## Quick Answers - **What is this?** Yellow Jacket 78075 Water Manometer by yellow jacket - **How much does it cost?** Β£51.95 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/14206200-yellow-jacket-78075-water-manometer) ## Best For - yellow jacket enthusiasts ## Why This Product - Trusted yellow jacket brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Ready-to-Use Kit:** Includes tubing and fitting for immediate setup and testing - β€’ **Durable & Economical:** Robust plastic construction designed for long-lasting, cost-effective performance - β€’ **Hands-Free Convenience:** Built-in strong magnet keeps the manometer upright and stable during use - β€’ **Precision Pressure Readings:** Clear, easy-to-read markings for accurate water column measurements - β€’ **Trusted American Craftsmanship:** Proudly made in the USA, ensuring quality and reliability ## Overview The Yellow Jacket 78075 Water Manometer is a 10-inch plastic tube manometer designed for precise measurement of manifold pressure in natural or LP gas systems. Featuring easy-to-read markings and a strong magnet for hands-free use, it includes tubing and fittings for quick setup. Made in the USA, this economical tool is perfect for professionals and DIYers seeking reliable, accurate pressure readings without calibration hassle. ## Description Economical plastic tube manometer helps you set manifold pressure for natural or L.P. gas. Goes to -2" W.C. for newer systems. Strong magnet on manometer holds it in convenient upright position. Includes tubing with fitting. Made in the USA. Review: Simple, cost effective (and does have instructions) - I rarely write reviews but I liked this tool. I'm a general contractor and have no association with the manufacturer or seller. I bought this for personal (not business) use to check water column pressure on a combi boiler while it was firing at 100%. It's a simple, basic tool that does it's job perfectly - and cost effective for a DIY or only occasional user. Some folks have said they don't come with instructions. That's incorrect - they do, but they're just a few lines printed on the side of the tube (the tube is clear so they don't stand out). The magnet is also handy to mount it while you're fussing with the tubing. One thing to note: when in use, with (clear) water and clear tubes, it's helpful to have a flash light and shine it at different angles so you can more clearly see where the inner tube water level settles, showing the WC measurement. Review: RV OWNERS!!! - I wanted two methods to test propane on a RV. I have the dial manometer but wanted something that doesn't need calibrating. This tube manometer is just over 15" long. It's a quality and detrimental piece of equipment. I put water with a slight tint from 1 drop of food coloring in the tube and let the propane pressure do the rest. It's great! ## Features - Economical water type manometer - Features easy to read markings - Comes with tube and fitting - Country of Origin: United States ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0038QHTK2 | | Best Sellers Rank | #196,381 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #52 in Manometers | | Brand Name | Yellow Jacket | | Customer Reviews | 4.6 4.6 out of 5 stars (191) | | Global Trade Identification Number | 00686800780757 | | Included Components | Manometer | | Item Dimensions | 10 x 1 x 1 inches | | Item Type Name | Made of a durable plastic | | Item Weight | 0.5 Pounds | | Manufacturer | YELLOW JACKET | | Material Type | Plastic | | UPC | 686800780757 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Yellow Jacket - **Item Weight:** 0.5 Pounds - **Item dimensions L x W x H:** 10 x 1 x 1 inches - **Material:** Plastic - **Thread Type:** 1/4 Npt ## Images ![Yellow Jacket 78075 Water Manometer - Image 1](https://m.media-amazon.com/images/I/613pSIfVdCL.jpg) ## Questions & Answers **Q: Hooked up to wh conn. it read 7.5”. fired up furnace & dryer. it dropped to 6.5”. excellent reading. should i trust? seems so high for residential.** A: A good reading would be one above the minimum gas supply pressure specification on the water heater. I have seen a drop in pressure when the air heater comes on. This may have something to do with a shared gas supply branch pipe in my case. I think the gauge is accurate. **Q: Will this measure positive and negative static air pressure in an air handler? What do you use for a probe?** A: I used the manometer to measure and then adjust the regulated propane pressure at a back-up generator. You should be able to measure the pressure inside of an air handler plenum as long as the pressure doesn't exceed the range of the manometer. The manometer comes with a plastic tube along with a 1/4" npt brass fitting with a hose barb. I would think you could drill a hole in the wall of the plenum where the diameter is such that you could get an interference fit with the plastic tube - at least with a good enough seal. The air handler will be moving enough air so that a small leak would not compromise the reading. For the suction that you are trying to measure, maybe fill the manometer only halfway with water so that the water is drawn up the column - wouldn't be able to measure much suction though. Remember, the manometer is only measuring the pressure differential between atmospheric and what you have connected to the plastic hose. Good Luck! **Q: Feeling a little dumb here. but how exactly does this hook up? (I want to check NG pressure out of a 1/2" black pipe)** A: Get a reducer 1/2"by 1/4" and conect the brass 1/4 that comes with this manometer and add water on your glass up to the 0 mark and open your gas and test your pressure. **Q: Is there a standard type of fitting for connecting to the system? videos show people using diy fittings w/ stems. isn’t there a ready-made product?** A: I believe it has a standard fitting for relay driven gas valves like the ones used to control furnaces. If you want to measure pressure in a pipe, you need to build an adapter. Any good plumbing supply house or home center has the parts. They aren't expensive, and are reusable. Pro tip: pick up a roll of gas rated Teflon tape and use as directed. Tighten all joints securely. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Simple, cost effective (and does have instructions) *by A***O on March 4, 2018* I rarely write reviews but I liked this tool. I'm a general contractor and have no association with the manufacturer or seller. I bought this for personal (not business) use to check water column pressure on a combi boiler while it was firing at 100%. It's a simple, basic tool that does it's job perfectly - and cost effective for a DIY or only occasional user. Some folks have said they don't come with instructions. That's incorrect - they do, but they're just a few lines printed on the side of the tube (the tube is clear so they don't stand out). The magnet is also handy to mount it while you're fussing with the tubing. One thing to note: when in use, with (clear) water and clear tubes, it's helpful to have a flash light and shine it at different angles so you can more clearly see where the inner tube water level settles, showing the WC measurement. ### ⭐⭐⭐⭐⭐ RV OWNERS!!! *by J***E on September 5, 2025* I wanted two methods to test propane on a RV. I have the dial manometer but wanted something that doesn't need calibrating. This tube manometer is just over 15" long. It's a quality and detrimental piece of equipment. I put water with a slight tint from 1 drop of food coloring in the tube and let the propane pressure do the rest. It's great! ### ⭐⭐⭐⭐⭐ Awesome for natural gas and propane *by J***. on February 17, 2023* Works great to get your furnace gas pressure no need to worry if u got batterys or needs a charge just fill it with water to the line and attach (hose is stiff kinda hard to attach but after a couple times it slides right on) definitely buy if u in the hvac field great tool. ## Frequently Bought Together - Yellow Jacket 78075 Water Manometer Made of a Durable Plastic - MEASUREMAN Natural Gas or LP Gas Manifold Pressure Test Kit, 0-35 "W.C., 1/4" NPT, 40" Length Hose --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/14206200-yellow-jacket-78075-water-manometer](https://www.desertcart.co.uk/products/14206200-yellow-jacket-78075-water-manometer) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-15*