Car And Truck Brake Parts

Inlet Connector

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Inlet Connector
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Pipe

Different plastics are available, including ABS. polypropylene and uPVC. Support horizontal pipes about every 500mm. vertical pipes about every 12m. Basin pipes connected to a single-stack system are restricted to a maximum length of 3m unless special precautions are taken (special automatic resealing traps or designing the system with separate ventilation pipes, for instance).

Flexible waste pipe is also available particularly useful under sinks and basins.

Sockets

For joining lengths of plain ended pipe together. Available for all methods of joining. Some sockets have a plain end to take another connector instead of a pipe.

Bends

For taking runs of 'horizontal' pipe around corners. 90 degree and 135-degree angle bends are most widely available. Waste pipes should slope (but often only slightly) towards the outlet - to connect these to vertical pipes, use 91-degree or 92-degree bends. Some bends have a plain end and adjustable - swivelling - bends are also available.

Tees

Common angles are 90, 91, 92 and 135 degrees. Tees are usually swept in the direction of the flow (the tees should be fitted so that the direction of the bend from the branch into the main pipe is the same as the direction of the flow of water). Avoid using tees for joining two waste pipes that then run to a single-stack system wastes should be connected individually to the stack.

Connectors

Various types are available for connecting pipe to different fittings. Reducers can be used for joining 32mm or 40mm pipe to 40mm or 50mm pipe. Copper compression can be used to connect plastic pipe to existing copper wastes. BSP screwed thread can be used to connect pipe to a waste outlet in sinks and so on. Jointing paste must not be used on screw threads, but PTFE tape can be used if necessary.

WC connectors

The easiest joint to make to a WC is with a plain-ended connector. This should be dry-jointed to the WC outlet, using a rubber gasket. Various patterns of connector are available with different angles and lengths of plain-ended spigot (depending on the position of the WC pan and the soil pipe to be connected). For particularly awkward joints, a Multi-kwik connector can be used - again, various patterns are avail¬able, including one that will cope with slight displacements between the pan outlet and the soil pipe.

Traps

P traps have a horizontal outlet; S-traps have a vertical outlet. Trap inlets usually have BSP threads for connecting directly to waste outlets. Shallow-seal traps can be used on wastes discharging into gullies or hopper heads; on single stack systems deep seal (75mm) traps should be used. Deep-seal traps take up more room, and to install one beneath a bath you may need to cut away the floorboards. Bottle traps are neater than tubular ones and may be easier to use in tight spaces instead of a deep-seal trap -they should not be used on waste disposers. Bath traps often come complete with over¬flow system attached. Washing machine traps have an inlet at the side for taking a washing machine outlet hose - the trap replaces the sink trap. In some situations, automatic resealing traps may be necessary - for example, for extra-long basin wastes connected to single-stack systems.

You might also want to learn how to design a waste system in your house and how to build separate buildings within a house.

Metlund D’mand System or the Chilipepper Cp6000 -- a Product Comparison

Hot water demand systems are specialized circulating systems for use when there is not already a hot water return line. They are systems designed to pump your hot water from your water heater to your fixtures fast without running water down the drain.

 

Your cold water line connects to the inlet of the water heater. Your hot water line connects to the outlet of the water heater.  So if you connect a pump between your hot and cold water lines you can pump the water in a big circle.

 

A hot water demand system pump connects between the hot and cold water lines at the sink furthest from your water heater.  When you desire hot water you push a button that starts the pump.  The pump sends the water through the hot water piping to the pump, and the cooled off hot water that was in the hot water piping is send back to the water heater inlet through the cold water piping.

 

When the pump senses an increase in temperature, it shuts off, preventing hot water from getting in the cold water line.  If the pump is strong enough, you can get your hot water faster than running the faucet. 

 

Demand systems use very little electricity, costing typically between $1.00 and $2.00 per year to operate.

 

Let’s compare two such systems, the Metlund D'MAND System, and the Chilipepper CP6000.

 

Metlund D'Mand Systems

 

The Metlund D'MAND system has three different models with different horsepower ratings. The bigger the horsepower rating is, the faster the flow rate.

 

The first model, the S-50 sized one, has the lowest power and the lowest price at about $339.50 for the S-50T-PF-V-102.  According to the Metlund website it is not recommended for tankless water heaters. The S-50 has 1/40 horsepower. The performance of the S-50 is listed as having a maximum flow rate of 8 gallons per minute with a maximum pressure of 10 feet of head.  10 feet is equal to about 4.3 psi. 

 

However this is a bit misleading. In order to pump 8 gallons per minute the pump cannot have any back pressure, so the outlet can not be hooked to anything.

 

With only 4 psi the pump can't pump much water through even a straight piece of pipe. Only at zero psi backpressure can the pump push out 8 gallons per minute.  With the given information it's impossible to tell what the flow rate would be when it is installed in a plumbing system. 

 

Metlund suggests using it for runs of less than 50 feet, and it has a 3 year warranty. You have to use full 1/2" fittings to plumb the pump in because there isn't enough pressure to pump much water through the small restrictions in the angle stop valves under the sink.  

Metlund Model S-70T

 

The next larger model is the S-70T. The website recommends the S-70T for pipe runs shorter than 60 feet when used with a tankless water heater and up to 100 feet with a standard water heater. The S-70T motor has 1/25 horsepower. As with the other models this unit requires full 1/2" piping connections and the warranty is 5 years.

 

This pump is rated at 14 gallons per minute and 16 feet of head. The 14 gallons per minute has to be done with 0 psi back pressure, and at 16 feet of head (7psi) the output flow drops to zero. Retail Price: About $441.50.

 

Metlund Model S-02

 

The largest model, the S-02, again with a listing of 28 gallons per minute and 30 feet of head (13 psi), has 1/8 horsepower. As with the previous models this one requires full 1/2" plumbing connections. This model weighs 16 pounds.

 

The S-02T-PF-V-102 has a list price of about $759.50, and the warranty is 5 years.

 

All three models list a life expectancy of 15 years, and shut off when a temperature increase of 3 to 4 degrees is detected at the pump.

All three models are available on Metlund’s website.

 

Chilipepper CP6000

 

Chilipepper Sales only manufactures one model, the CP6000 which has a powerful 1/3 horsepower motor.  It produces a maximum pressure of about 60 psi (138 feet head), and has a maximum flow of about 4 gallons per minute. (with no back pressure)

 

The Chilipepper was designed to be connected to the plumbing with standard hoses used for connecting the faucets to the shut-off valves. That way you do not need to turn off the water to the house. All you need to do is turn off the shut-off valves under the sink, and connect up the hoses.

 

The horsepower is needed to force the water through the tiny (less than 1/4" dia.) openings in the hose connectors.  Since nearly all the pressure is used to overcome the pressure drop created by the small holes, the Chilipepper nearly always pumps 2-3/4 to 3 gallons per minute no mater what the piping situation.

 

The CP6000 is 7-1/2" long x 4-1/8" wide x 3-1/2" tall making it substantially smaller than the smallest of the Metlund units.  It is also lighter at about 4 pounds.

 

To achieve the small size and big power the CP6000 uses a brush type motor. The brushes will wear out after about 500 hours of operation.  If you use your pump 5 times a day 365 days per year, and it runs 1 minute each time (100 -150 feet), then you will accumulate about 30 hours per year.  So you could expect your pump to last about 16 years.  A new lip seal and a new set of brushes will get it back up and running again.

 

The CP6000 has a maximum run time of 3 minutes. If it doesn't detect an increase in temperature within 3 minutes it will shut off.  The reason for this is that if the water heater breaks down, there would never be an increase in temperature to shut it off and it would run forever.

 

To determine the maximum distance from the water heater that can be handled by the Chilipepper, we need to see how far the water would be pumped in 3 minutes. This will depend upon your plumbing.  Since the pump produces a flow of about 3 gallons per minute no matter what size the piping is.  The smaller the pipe the faster the water will flow.

 

For an example, at 3 gpm the water velocity in 3/4" inch diameter type L copper pipe would be about 2 feet per second.  In type L 1/2" pipe the velocity would be about 4 feet per second.  Therefore, assuming the worst case, that the house is plumbed entirely with 3/4" pipe, the maximum distance your fixture could be from the water heater would be about 360 feet.  If plumbed entirely with 1/2" dia. pipe, the distance would be 720 feet.

 

The CP6000 has an unconditional 30 day money back guarantee, and it can be returned for a full refund for with no questions asked.

 

The CP6000 has an adjustable temperature sensor so you can set the unit to turn off when it senses a temperature of 3 to 12 degrees, allowing you to fine tune the arrival of hot water to your liking.

 

The CP6000 retails for $179.99 on the Chilipepper Website.

 

Both Metlund and Chilipepper have code approvals.

 

About the Author

Two FAST hot water demand systems compared: Metlund VS Chilipepper

For more information about all kinds of water heaters: Water Heaters Instant hot water systems.

What is this plumbing part called?

I have some small pumps that use this type of connector to connect the inlet and outlet tubing:

http://tinypic.com/view.php?pic=2588ht0&s=4

The black part at the bottom is an o-ring and it is held in the pump with a sliding latch.

What is this part called and where can I buy more? I need a smaller flange size.

Thanks

I do not know the name of that particular part, but I have never had a problem finding a part I needed. Take the part with you to a home improvement store and see if a person in their plumbing, or lawn and garden section can help. You can also try a smaller hardware store, you might be amazed at the wide range of parts they carry, so that they can compete with the big chains. Finally, or first, do a search on the pump manufacturer's name and products, see if you can order the parts on-line or if they have a list of retailers you can use.

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