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Buttress Thread vs Acme Thread Comparison
Buttress Threads provide superior sealing and higher burst ratings than the Acme Threads found on most housings. Because of this, Pentek introduced their line of 3G Housings that feature buttress threads. We also carry housings from Watts/Flowmatic & Kemflo that utilize buttress threads.
Buttress Thread Design
![](/images/misc/filter-housing-threads-buttress.jpg)
Acme Thread Design
![](/images/misc/filter-housing-threads-acme.jpg)
Buttress Thread Design
![](/images/misc/filter-housing-threads-buttress-housing.jpg)
Acme Thread Design
![](/images/misc/filter-housing-threads-acme-housing.jpg)
Shipping
Orders over $150 receive free UPS ground shipping in the continental U.S. (excluding Alaska & Hawaii). Exceptions exist, and additional freight charges will apply for some low priced, drop shipped items from Canada and for addresses that carry accessorial UPS charges, such as certain island destinations that require ferry service and other remote locations. We will notify you of any additional amount before it is charged.
Next Day Air, 2nd Day Air & 3-Day Select delivery services are available at an additional cost.
We ship in stock items on the next business day in most cases. UPS Next Day Air and 2nd Day Air orders received before 3:00 pm Eastern Time can be shipped the same day, if ordered by phone and a request is made to expedite the order.
Please allow up to 10 business days, starting with the next business day after your order was placed, for delivery. Many orders will be received in less time. Back-ordered items may require extra time. Should any items in your order be delayed, we will contact you. If we can not deliver your order in this time frame, the order may be canceled prior to shipment, and a full refund will be credited.
Special order merchandise or custom-built equipment requires longer lead-time. Large orders and assembled whole house units are shipped via common carrier, stretch wrapped on a pallet.
We do not ship to P.O. boxes. Non-stock items are usually drop shipped.
Everpure QL3 Head
Everpure systems include a .5 GPM flow restrictor fitting that should be installed in the outlet port of the head. The fitting limits the flow of water that can go through the filter to .5 GPM.
To increase the flow to 1 GPM to match the flow rate of the MAF Cartridge, the .5 GPM fitting must be replaced with a 1 GPM fitting. The MAF cartridge will work with the .5 GPM flow restrictor, but the flow will be limited to .5 GPM. It is only necessary to replace this fitting if you desire an increase in your flow rate.
It is possible that the flow restrictor may be installed on the inlet port, however this is not recommended. If upon removing the fitting from the outlet, if it is not found to have a flow restrictor in the fitting (usually stainless steel), remove the inlet fitting and see if the flow restrictor was installed on the inlet side.
It is recommended that the flow restrictor be installed on the outlet port to prevent the small opening from becoming clogged with sediment from the untreated water.
QL3 Head with Flow Restrictor Fitting
![](/images/misc/diagram-everpure-ql3-head.png)
John Guest Quick-Connect Instructions
Download Quick-Connect Instructions
Requires Adobe Acrobat Reader
Step 1 – Insert Tube
![Quick Connect Diagram 1](/images/misc/john-guest-quick-connect-2.gif)
Fitting grips before it seals. Ensure tube is pushed into the tube stop.
Step 2 – Push Up to Tube Stop
![Quick Connect Diagram 2](/images/misc/john-guest-quick-connect-3.gif)
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.
Step 3 – Pull To Check if Secure
![Quick Connect Diagram 3](/images/misc/john-guest-quick-connect-4.gif)
Pull on the tube to check that it is secure. It is a good practice to test the system prior to leaving site and/or before use.
Step 4 – Disconnecting
![Quick Connect Diagram 4](/images/misc/john-guest-quick-connect-5.gif)
To disconnect, ensure the system is depressurized before removing the tube. 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.
John Guest Fittings, Valves & Tubing
![John Guest Super Speedfit](/images/misc/john-guest-speedfit-logo.gif)
John Guest quick connect fittings connect and disconnect without tools and never leak. Tough as nails NSF Certified and ISO 9001 Certified. These fittings are trusted the world over. John Guest fittings, ball valves and tubing are the best components for a water tight seal every time.
View all John Guest Products How To Use Quick-Connect![John Guest Fittings](/images/misc/john-guest-fittings.jpg)
John Guest Fittings
JG fittings are available in sizes from 1/8″ to 1/2″ for a full spectrum of reliable tubing connections.
![John Guest Tubing](/images/misc/john-guest-tubing.jpg)
John Guest Tubing
JG tubing is 230 psi rated flexible plastic tubing. This tubing is tough. Much more flexible than copper, it will probably last forever!
![John Guest Ball Valves](/images/misc/john-guest-ball-valve.jpg)
John Guest Valves
JG ball valves make shutting off water easy for anyone. Just a quick turn and it’s off!
John Guest Quick-Connect
John Guest is the originator of Quick-Connect Fitting Technology and the world leader. John Guest Fittings, Valves & Tubing are produced in the UK to exacting quality standards that are second to none!
![Genuine John Guest Fittings](/images/misc/john-guest-genuine-logo.png)
Reduction Of Lead In Drinking Water Act
Lead In Drinking Water Act
In 2011 Congress enacted the Reduction of Lead in Drinking Water Act to amend the Safe Drinking Water Act’s section regarding the use and introduction into commerce of lead pipes, plumbing fittings or fixtures, solder and flux. The Act established a prospective effective date of January 4, 2014, which provided a three year timeframe for affected parties to transition to the new requirements. All of the metal fixtures and fittings sold by H2O Distributors are compliant with this act.
[ Requires Adobe Acrobat Reader ]
Reduction of Lead in Drinking Water Act
More Information on Lead in Drinking Water
Made in the United States of America
H2O Distributors is proud to feature American-made products on our website.
Minimum Advertised Price (MAP) Policy
When prices are not shown on the product detail page, add the item to the shopping cart to view the price.
To see our “in-store” price on this product, you must add it to your Shopping Cart by clicking the Add to Cart button. Please be assured that adding an item to your cart does not obligate you to purchase it–you can always delete the item from your cart.
We are required by the manufacturer to do this to conform to their new “Minimum Advertised Price” (MAP) policy.
Minimum Order Total
A minimum of $20.00 purchase (before shipping and applicable taxes) is required for all orders placed through this web site.
NSF Certification
NSF is widely recognized for its scientific and technical expertise in the health and environmental sciences. Its professional staff includes engineers, chemists, toxicologists, and environmental health professionals with broad experience both in public and private organizations. NSF certified products will be marked with a symbol.
NSF has earned the Collaborating Center designations by the World Health Organization (WHO) for Food and Water Safety and Indoor Environment.
Quick-Connect Instructions
Download Quick-Connect Instructions
Requires Adobe Acrobat Reader
Step 1 – Insert Tube
![Quick Connect Diagram 1](/images/misc/john-guest-quick-connect-2.gif)
Fitting grips before it seals. Ensure tube is pushed into the tube stop.
Step 2 – Push Up to Tube Stop
![Quick Connect Diagram 2](/images/misc/john-guest-quick-connect-3.gif)
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.
Step 3 – Pull To Check if Secure
![Quick Connect Diagram 3](/images/misc/john-guest-quick-connect-4.gif)
Pull on the tube to check that it is secure. It is a good practice to test the system prior to leaving site and/or before use.
Step 4 – Disconnecting
![Quick Connect Diagram 4](/images/misc/john-guest-quick-connect-5.gif)
To disconnect, ensure the system is depressurized before removing the tube. 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.
SharkBite Push-To-Connect Instructions
Download SharkBite Instructions
Requires Adobe Acrobat Reader
How To Install SharkBite Brass Push-To-Connect Fittings
SharkBite brass push-to-connect fittings create a seamless and easy transition between different types of pipe materials. No tools are required and the fittings can be even installed in wet lines. The fitting can be rotated after installation, so you can install without having to worry about how it’s positioned. SharkBite fittings are also approved for behind the wall and underground installations. If the fitting is being installed for underground use, wrap with silicone self-adhesive tape before burying.
Step 1 – Identify the pipe material
To get started, identify the pipe material. SharkBite brass push-to-connect fittings are compatible with PEX, Copper, CPVC, PE-RT and HDPE pipe. SharkBite fittings come with a PEX stiffener pre-loaded into the fitting for PEX, PE-RT and HDPE. The PEX stiffener does not need to be removed for Copper or CPVC applications.
Step 2 – Cut pipe cleanly & squarely
Be sure the pipe is free of scratches or debris and cut the pipe as cleanly and squarely as possible. If you are working with copper pipe, use a deburr tool or sand paper to remove any sharp edges or burrs on the pipe. Failing to deburr the pipe properly can compromise the fitting.
Step 3 – Measure & mark the insertion depth
Use your SharkBite Deburr & Gauge Tool to measure and mark the insertion depth on your pipe.
Step 4 – Make the connection
Push the fitting to the insertion mark you just made on the pipe. Now, turn on the water and check the connection.
Removing SharkBite Fittings
Unlike other fittings, SharkBite brass push-to-connect fittings can be removed and re-used if changes are necessary. To remove the fitting, use a SharkBite Disconnect Clip or Disconnect Tongs. To use the Disconnect Clip, snap it on to the pipe and pull up to the release collar. Press the release collar using the Disconnect Clip and pull the pipe from the fitting. To use the Disconnect Tongs, slide the tongs over the fitting and the pipe. Squeeze the tongs to press the fitting’s release collar and pull the pipe from the fitting. The SharkBite Universal brass push-to-connect fitting is ready to re-use.
Shipping Rates:
These are our shipping rates for orders shipped within the continental U.S. (excluding Alaska & Hawaii). There is a minimum order total of $20. Please see our Shipping Section on our Terms & Conditions page for more detailed information.
Order Total | Shipping Charge |
---|---|
$20 – $59.99 | $15 Shipping |
$60 – $119.99 | $12 Shipping |
$120 – $149.99 | $8 Shipping |
$150+ | Free Shipping |
Warranty for Inline Whole House Systems
The following warranty is effective from the date of installation or 60 days after shipment, whichever date comes first.
A working pressure reducing valve must be installed in front of any water treatment equipment!
- 3 year limited warranty on all components and parts delivered by H2ODistributors.com Parts only.
- 3 year limited warranty on Flow Thru Tank Head and Filter Housings. Parts only.
- 10 year limited warranty on the pressure vessel (tank itself – not media). Parts only.
The warranty does not include shipping or installation charges if incurred.
The warranty on the system is effective when the system is functioning under normal operating conditions. Any variation in normal operation that may cause the unit to malfunction will void the warranty. Examples include if a pressure reduction valve fails (or is not installed) causing the system to be exposed to high pressure, exposure to freezing temperatures, etc.
Water Quality Association’s Gold Seal
The Water Quality Association’s Gold Seal Certification Program is dedicated to providing public health and safety services throughout the USA and globally, while maintaining expert service, superior reputation, and fair pricing. The Gold Seal Program offers certification of all products and chemicals that contact drinking water.
WQA certified products will be marked with a symbol.