Marine Depot offers FREE economy shipping for most products when you spend $29 or more! Your order will be delivered 1-7 business days after it ships out. Economy shipping methods include UPS Ground, USPS First Class, and/or SurePost. You can also upgrade your shipping to UPS Ground which speeds delivery to 1-5 business days. A shipping upgrade is $2.99 for orders under 20 lbs, $3.99 for orders 21-40 lbs, and $4.99 for orders over 41 lbs. Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Free shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for this special offer.
Free Upgraded Shipping For Orders $250+
Most orders over $250 qualify for FREE upgraded shipping! Your order will be delivered 1-5 business days after it ships out. Thanks to Marine Depot’s two strategically located warehouses in Nevada and Georgia, over 90% of shoppers receive their orders within 2 business using this level of service (UPS Ground). Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Free shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for this special offer.
$2.99 Flat Rate Shipping For Orders Under $29
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in 1-7 business days after it ships out. Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Our $2.99 flat rate shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for $2.99 flat rate shipping.
Frozen foods are delivered 1-3 business days from the day your order ships. Frozen foods are shipped every Monday and Tuesday. Shipping cut-off is Tuesday at 10 am PST (1 pm EST). Orders received after 10 am PST on Tuesday will be shipped the following week. Shipping and handling is a $19.99 flat-rate charge so you can order as much or as little as you like.
Orders not shipped within the contiguous United States—the 48 U.S. states on the North American continent south of Canada plus the District of Columbia—are considered international orders. International orders are not eligible for Marine Depot’s free shipping promotions and additional surcharges may apply. It is important to note that not all products we carry can be shipped internationally. Any brokerage fees, tariffs and/or taxes will be billed to you directly by the shipping courier. International customers must use the same billing and shipping address.
Cut tube square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be removed before inserting into fitting. For soft or thin walled plastic tubing we recommend the use of a tube insert.
Insert tube. Fitting grips before it seals. Ensure tube is pushed in to the tube stop.
Push up to tube stop. Push the tube into the fitting, to the tube stop. The collet (gripper) has stainless steel teeth which hold the tube firmly in position while the "O" ring provides a permanent leak proof seal.
Pull to check secure. Pull on the tube to check it is secure. It is good practice to test the system prior to leaving site and/or before use.
Disconnecting: Push in Collet and remove tube. To disconnect, ensure the system is depressurized before removing fitting. Push in collet squarely against face of fitting. With the Collet held in this position, the tube can be removed. The fitting can then be re-used.
Manufacturer Info
John Guest In 1961 John Guest`s vision was to run a company with innovation, quality and sustainable growth to be at the core of the organization’s principles.
In 1974, John Guest developed his first push in tube connector for use with compressed air. That basic "Super Speedfit" concept has been developed to include fittings for a wide range of applications.
John Guest`s World Headquarters are located in the UK where all their fittings are designed, manufactured and distributed throughout the world.
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Q
What material is the nut made of? Will this rust or corrode in a saltwater aquarium sump?
These John Guest bulkheads are some of the best and easiest to use. They are easy to install and don't seem to leak at all. I've installed a few in my RO and top off system and haven't had a problem. I would recommend this product.
For its intended use, I'm sure this part is great. How could JG not be?However, it is NOT intended for the use that it appears most people are trying to use it for.I came by the website to look for something like this for an auto-topoff system. Doing a little more research elsewhere, I found John ...Read More
For its intended use, I'm sure this part is great. How could JG not be?However, it is NOT intended for the use that it appears most people are trying to use it for.I came by the website to look for something like this for an auto-topoff system. Doing a little more research elsewhere, I found John Guest's catalog, which specifically states that this bulkhead is not for submerged use. So, it's not designed to be at the bottom of a trashcan-reservoir for ATO purposes.Hide
I drilled a 5/8 in. hole in the side of a 5 gallon bucket near the bottom and installed this in it,connected(with 1/4in. tubing like is used for RO/DI filters)to a Kent float valve in my sump for auto top off,I set the bucket on a table next to my sump for gravity flow,it works great.
I did add 1.5...Read More
I drilled a 5/8 in. hole in the side of a 5 gallon bucket near the bottom and installed this in it,connected(with 1/4in. tubing like is used for RO/DI filters)to a Kent float valve in my sump for auto top off,I set the bucket on a table next to my sump for gravity flow,it works great.
I did add 1.5 to 2 gallons a day,now I just fill the bucket every other day.
My water level in my sump hasn't changed since I did this.
I would have gave it a 5 star rating if it had came with a rubber gasket.Hide
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in 1-7 business days after it ships out.
free shipping for orders $29+
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in 1-7 business days. Just spend $29 or more!
free faster shipping for orders $250+
Over 90% of shoppers receive their orders within 2 business using UPS Ground. Upgrade from free economy shipping to UPS Ground for only $2.99—or spend $250 and we’ll upgrade you automatically!
need your order even faster? no problem!
Expedited shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
buy it today and we'll ship it today
Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
live plants, live foods, and frozen foods delivered to your door
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
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