Hi this is Jeff, today i'd like to talk to you about faucet stems. The stem in anybody's faucet is the mechanism that actually shuts the water on and off and such out of a faucet. So what we at Fisher do is we have check stems, 2 part swivel stems. The 2 part swivel stem is used in faucets where there is just two valves. Picture the hot water side and the cold water side of a faucet and that application we would use the 2 part swivel stem. Okay, check stems consist of three basic parts: the disc retainer and seat washer, a stainless steel spring, and the stem body. The spring lives inside the body and the disc retainer fits inside and that' has become the spring-loaded check stem. Spring loaded check stems are designed to prevent cross flow. So let's take a look at this faucet cross section and look at what cross flow is. Cross flow is when you have a differential in water pressure between the hot and the col. For example you might have 60 pounds of water pressure on the hot and maybe 40 pounds of water pressure on the cold. That'd be 20 PSI differential between the two. IF both these valves were completely open, you can see where the hot water at 60 PSI, 20 pound difference is going to flow right into the cold side, and now you're putting hot water into the cold side which means you're putting hot water into an ice machine or flushing toilets with hot water, not a good thing. So what we do is we put in spring loaded check valves to prevent that. So, whenever we have a faucet fixture with one, two, and three maybe a spray valve out of here, three valves, as soon as that third valve is closed, all this water becomes static and these springs come down and shut off the water supply to the faucet, preventing cross flow. Okay, so now let's take a look at the Fisher swivel stem. We use a two part swivel stem, and what we mean by that is the black seat washer is attached to a swivel on the end of the stem. So as the stem screws down into the faucet body and it makes contact with our stainless steel seat, as soon as it makes contact it becomes more of a plunging action. This is why the Fisher 2 part swivel stem means lower maintenance. One of the most important things in anybody's faucet is going to be the seat. The seat is actually the part where the rubber seat washer seats onto the seat to shut the water off. Everybody else uses brass seats. Brass is a very soft material, and as water flows across that seat, it erodes the seat, and then no matter how many times you replace the seat washer, it still leaks. Fisher uses stainless steel seats in all of its products. Stainless steel seats guaranteed for life. Well it seems that Fisher's stem story is complete. A 2 part swivel stem means lower maintenance and stainless steel seats that are guaranteed for life. That's Fisher, thanks for watching.
Copy and paste the embed code above.
Learn all about the ins and outs of Fisher's check stems and 2 part swivel stems by watching this video. With great features, including stainless steel seats with a lifetime guarantee, it's no wonder you'll choose Fisher for all your faucet needs!
Fisher offers two different types of pre-rinse replacement hoses. One that is made for Fisher hoses only and one that is a universal hose that can adapt with other models! Watch this video to learn more about these two types and how they work!
Check out this video to learn how Fisher can help you upgrade your pre-rinses! Fisher offers pre-rinse components, such as spray valves, hoses and springs that are interchangeable, allowing them to adapt with any other brand.
User Data Policy
The Leading Distributor of Restaurant Supplies and Equipment
Based in Lancaster, PA, WebstaurantStore is the largest online restaurant supply store serving food service professionals and individual customers worldwide. With thousands of available products and over 5.5 million orders shipped, we have everything your business needs to function at its best. Over the years we have expanded our selection of wholesale supplies and commercial equipment to include healthcare, educational, and hotel supplies.
Our focus is your convenience – order online from your laptop, desktop, or smartphone 24 hours a day, 7 days a week. Our fast shipping, low prices, and outstanding customer service make WebstaurantStore the best choice to meet all of your professional and food service supply needs.