Part # 1700C20
Flo Control check valve prevents backflow to protect sensitive equipment from chemical damage.
True union design allows the valve to be disassembled by unscrewing the in-line nuts, leaving the tail pieces cemented to the pipe. The valve body can be removed for visual inspection, repair, or cleaning, making it easy to change the body or spring tension.
I (might) need a check valve between a Hayward 140,000 BTU heat pump and an AquaRite Turbo Cell (salt water chlorinator). The heat pump's output line must run up and over the input line — rising maybe a foot or so, going horizontally beyond the input, then back down, to form an inverted "U" shape.
Do I still need a check valve?
If so, I'll be able to mount the valve it with the flow running upward, and I'd like the least possible resistance. Is a flap valve (no spring) right for the job?
A spring loaded check valve would be the best as it can be mounted Vertical or Horizontal. A flapper would be best to mount Horizontally.
I have an existing 2" Spring Check Valve that is leaking and I am considering the 1700C20 Clear Flo Control Valve. I’m concerned that it will fit in the existing piping , would you know the face to face dimensions of the valve itself? I see that the overall length of the valve, including the union nuts and pipe connectors is 9.735” and that is roughly what mine measure. Can I “assume” the threads on my connectors nuts will match the threads on the 1700C20?
If you are looking for the dimensions of the guts itself then that would be 6-1/8 inches. Also, I would not assume that the thread design would be the same as what you currently have as these are proprietary to the manufacturer.
I recently had a check valve fail and was unable to determine the type that was installed. Ended up purchasing a National Diversified swing valve. When removing the old to replace it I could see what I had purchased was different, and what was installed and failed was a Flo Spring check valve. Since the new one is not maintaining the spa level I want to replace it, is it normal for the swing valves to not work that well and are there different spring pressure I need to consider?
Hi, Jack. There is a difference between a swing and spring check valve. Swing check valves is usually used in vertical plumbing appication and the spring can be used in either application.
I have a
Pentair Clean and Clear Plus Cartridge Filter
Purex Whisperflo WF28 Pump
Triton MiniMax Plus Heater
There is a 2" x 2lb check valve on the output side of the heater.
The heater is old and broken. I am going to remove it from the system.
Do I need a check valve if I remove the heater?
If so what check valve do you recommend?
I bought this valve before realizing I need a vertical valve with the water flow going down.
1hp Pentair pump, 2" PVC . Check valve between heater and chlorinator. Can you recomend one for me please
Hi, Steve Mccain. If the water is flowing downward a check valve is not required.
I have old Flo check valves that need to be replaced, model D-2466. Currently installed vertically with water flow moving downward. Will these check valves work?
Hello, this valve can be installed vertically but the manufacture states that it is recommended to be installed horizontally if at all possible.
I have a clear flo control check valve.
The spring has no visible movement when I shut water off or on.
Is this normal.
Hi, Peter. The valve spring should open/close as water flows through the valve. The spring tension and the water flow will determine how fast the spring activates.
I have an in ground pool with a 1.5 HP pool (tower) pump. I need two new check valves. I am not sure how many pounds resistance needed for these valves. I see that valves with 1/2 lbs(like your 1700C20) along with 2 lbs and 5 lbs are sold. I'm not sure what I need exactly. One valve is between the heater and chlorinator, and one valve is on the drain from the spa. Will the 1/2 lb work for me?
Hi Jesse, A 1/2 lb check valve is adequate for both application.
We just purchased from you the Hayward 140,000 but Heat Pump. It calls for a 1/3 pound check valve to be cut in. I have one from you that is a 1/2 pound check valve. New. As I am not finding a 1/3pound anywhere, will the 1/2pound check valve work ok for this application. I have an inline chlorinator that this must go in between the heat pump and the chlorinator.
Hi Jerry S, The 1/2 lb check valve would be okay to use.
I am trying to find an exact replacement for an Inyo 1790C20 check valve so I can just switch out the body from the existing broken one. The PN on the valve is abraided but I think that is the number. This one seems close but the body is different and the OD with couplers is longer than mine which is 7 1/4". I don't have the space or pipe to switch to new couplers. Do you have an exact replacement? If not, what is the body length of just the check valve. Mine is 3 7/8".
I have no space for horizontal do they have a recommendation for a vertical mount
Hi Darryl, this valve can be installed vertically.... horizontally is just the preferred method. You would want to make sure the flow of water is going up.
WILL THIS VALVE WORK PROPERLY IF IT IS INSTALLED VERTICALLY VS HORIZONTALLY.
Hi Dave, this valve can be installed vertically but the manufacture states that it is recommended to be installed horizontally if at all possible.
I need to get the rubber seal ring and "O" rings - to replace - for the 2 inch check valve with the spring action gasket - the seal rings around the spring action valve has disintegrated - how do I find this
Timothy, The rubber seal that goes inside of the Check Valve is not replaceable, would recommend replacing the complete check valve.
would this unit slide in place of the 2" pipe or would it need to buy adaptors to fit in place. The original check valve is the same length as yours but i don't know if the nuts would adapt to your check valve would appreciate your input.
This check valve will slip over 2" plumbing for installation. Without knowing which valve you currently have I can not say that the threading would be the same. But it more than likely would be a proprietary threading specific to the MFG.
I would like to know the length of the body from end to end without the unions.I have a flo control valve in now and it is 5.25 inches from end to end without the unions.
Less than 1 hr
Pipe cutter, primer and glue
Less than 1 hr
I cut out the old valve using a hack saw. A union connection was then fitted and glued to place on the cut end of the 2 inch PVC pipe. The bottom of the new valve was cemented on this connector. .I loosen both ends of the new valve.The length of the valve was measured. Another union connector was fitted and placed on the remaining open end of the PVC. Since the new valve could be separated from the two connectors, it made the next step easy.The other end of the connector was primed and glued. I made sure the distance was right. The valve was placed and the connector ends were tightened. I waited 24 hours for the PVC glue to fully set. It works great. No leaks.
(5 out of 5 stars) Check Valve
Reviewed By: Bill Saumier from Spring Valley, CA ()
Pros: Good quality product exactly as advertised.
The check valve works great and is easy to install. If you order this from the pool store is will cost 2 time the cost.
(5 out of 5 stars) Clear Check Valve
Reviewed By: kid-zero from Vero Beach, FL ()
Pros: Clear, you can see if any debris is in it
The valve works great. I had problems with my D.E. backing up into the pool. This new Check Valve fix the problem. Also Shipping and Handling was superb. I was impress how fast this product came.
(5 out of 5 stars) works great
Reviewed By: David A. from kissimmee, fl ()
Pros: unions allow install and removal
product was delivered quickly and was easy to install works perfect does not allow water to flow in reverse at all 1/2 pound spring does not cause pressure increase in system