Question 1

Will this device work with Watts  500800 pump?

Accepted Answer

The device comes with the 500800 if I read the web correctly. So, yes it will work

Question 2

WHEN SENSOR VALVE CLOSES, DOES PUMP SHUT OFF?

Accepted Answer

The recirculating pump runs continuously when turned on.  The valve simply controls when hot water begins to seep into the cold water line which is what makes the hot water always available at faucets with the valves installed.  Depending on the pump you have, you can either program it to run 27/7 or as I do, program the timer on the pump to be on at certain times and off otherwise.  Mine is programed to be on from 7 am to 9 am, then again from 9 pm until 11 pm.  I also can override the timer when I need hot water at unanticipated times. If you run the pump continuously, it will greatly increase the amount of energy used to keep the water heated.  Hope that helps.

Question 3

i have installed the recert pump and have it running 24/7, there is excellent hot water but i am also getting warm/hot water on the cold water side?

Accepted Answer

Hi Mark, What is happening to you is absolutely normal, since the mentioned valve discharges al the hot water line into the cold one, and as in your case you have it running all the time, eventually the cold water line fills with mild hot water. You have two problems there, 1.- the pump consumes electricity on a constant basis and 2.- since the heat on the cold water line cools down eventually, you end up more electrical power, since the heater ends up cooling down and swithing on once more, to keep up with the energy wasted in maintaining both hot and cold water lines warm...What I did was simple; I installed a wireless remote control in both bathrooms and every time I need to use either, I press the ON button, and it takes about 40-60 seconds to warm-up the hot water lines. Before I leave the facilities I press the OFF button and that's it. These remote controls are dirt cheap in any electronic dealer (I got mine from China), and it works like a champ.Best regards

Question 4

how long is the warrenty on the valve?

Accepted Answer

We have replaced this valve about every 2 years and it’s annoying.  Our circulation pump runs about 16 hours a day.  There is one valve under a bathroom sink at the furtherest of the house for hot water recirculation.

ASIN	B00128BIUU
Best Sellers Rank	615,363 in DIY & Tools ( See Top 100 in DIY & Tools ) 5,041 in Central Heating System Accessories
Brand	Grundfos
Connector Type	Threaded
Customer Reviews	4.3 out of 5 stars 764 Reviews
Exterior Finish	Plastic
Exterior finish	Plastic
Global Trade Identification Number	00632514086777
Included Components	VALVE
Inlet Connection Size	1.5 Inches
Inlet Connection Type	Threaded
Inlet connection size	1.5 Inches
Inlet connection type	Threaded
Item Dimensions	15.2 x 5.1 x 2.5 centimetres
Item Type Name	VALVE
Item Weight	64 g
Item dimensions L x W x H	15.2 x 5.1 x 2.5 centimetres
Manufacturer	Grundfos
Material	Plastic
Model Number	595926
Number of Pieces	1
Number of Ports	2
Outlet Connection Size	1.5 Inches
Outlet Connection Type	Threaded
Part Number	595926
Size	2x6x1 inches
Thread Size	1.5 inches
Thread Type	NPT
UPC	735090530761 570039525268 786714807486 632514086777 632514079670 850007341121
Unit Count	1.0 count
Valve Type	Comfort Valve

Grundfos 595926 Replacement Comfort Valve for UP Circulator Pumps by Grundfos

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