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www.h2flow.net  

  Tel:  (+1) 419-841-7774  

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www.drydenaqua.com

Position & Chlorine Feeders

2

IMPORTANT NOTE: 

Before installing the FlowVis®, please refer to the section on Page 3 

regarding chlorine feeders.

Installation of FlowVis® should be in accordance with the following instructions.

Normal plumbing procedures such as cleaning, priming and gluing of fixtures should be 

followed in order to avoid leaks. 

Unlike other flow meters, FlowVis® is not affected by flow stream disturbances caused by its 

proximity to pumps, elbows, tees, valves, etc. FlowVis® does not require specific straight pipe 

lengths before or after its point of installation, and can be installed close to, or even adjacent to, 

other plumbing fittings. FlowVis® can be installed either horizontally or vertically.

NOTE:

 

When selecting 

a physical location to 

install FlowVis®, be sure 

to allow accessibility to 

read the scale on the lid.

Pay particular attention to the system’s direction of flow and make sure that the arrow on the lid 

of the FlowVis® is pointing in the correct direction. For the DN80 and DN100 versions, the Tee 

will have an additional arrow on one of its bosses. In the event that the FlowVis® is inadvertently 

glued into the plumbing in the wrong direction, simply remove the (8) screws holding the lid in 

place and rotate the entire lid assembly by 180˚.

NOTE:

 Always remove the FlowVis® lid assembly prior to gluing in the valve body.

NOTE:

 The above graphic only relates to applications that use erosion style chemical feeders. In all other circumstances, the FlowVis® can 

be installed in any of the locations shown.

Installation locations

Corrosion Resistant Check Valve

Filter

Heater

Chlorinator

1

2

3

4

5

1 = Best
2 = Very Good
3 = OK, but not ideal
4 = Bad
5 = Really bad

INSTALLATION

Summary of Contents for FlowVis DN100

Page 1: ...g floats or paddle wheels Combined Flow Meter and Check Valve for DN40 and DN50 65 CONCEPT As flow increases the flapper moves forward toward its fully open position The flapper s angular position is directly related to flow rate through the valve body tee A calibrated scale on the valve s lid provides a highly accurate reading of the flow rate Calibrated Scale Flow www h2flow net Tel 1 419 841 77...

Page 2: ...When selecting a physical location to install FlowVis be sure to allow accessibility to read the scale on the lid Pay particular attention to the system s direction of flow and make sure that the arrow on the lid of the FlowVis is pointing in the correct direction For the DN80 and DN100 versions the Tee will have an additional arrow on one of its bosses In the event that the FlowVis is inadvertent...

Page 3: ...hlorine Feeders damaging other equipment such as Heaters www h2flow net Tel 1 419 841 7774 www drydenaqua com Installation Tightening Lid Screws 3 TIGHTENING LID SCREWS When removing and re installing the FlowVis lid assembly it is important to adhere to the following procedure 1 Make sure that the o ring on the underside of the lid is undamaged lubricated with silicone such as Boss 820 and is in ...

Page 4: ...d near the rear of the lid 2 Indicator arm is being viewed correctly 3 Indicator arm is being viewed too far back front of the lid MAINTENANCE Although FlowVis is designed to be maintenance free periodic checks should be made to the following Condition Check for Remedy Leak around lid seal O Ring Failure Replace O Ring Leak from lid Cracks in lid Order new lid from supplier Higher flow reading tha...

Page 5: ...0 08 0 10 0 12 0 14 0 16 5 7 9 11 13 15 17 19 21 23 25 Head Loss Bar FlowRate m3 h Head Loss Bar DN50 Head Loss DN50 0 000 0 005 0 010 0 015 0 020 0 025 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 Head Loss Bar FlowRate m3 h FlowVis HeadLoss Bar DN80 Head Loss DN80 0 004 0 006 0 008 0 010 0 012 0 014 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 Head Loss Bar FlowRate m3 h FlowVis H...

Page 6: ...DN40 and DN50 65 Viton Lower Flapper DN80 and DN100 only ABS Interconnecting link DN80 and DN100 only 316 Stainless Steel Lower Retaining Pins DN80 and DN100 only 316 Stainless Steel Materials used Function Models Comments Max working pressure All models 3 5 Bar Accuracy FV C M DN40 and FV C M DN50 65 Average 97 9 98 97 5 Accuracy FV M DN80 and FV M DN100 Average 98 6 in straight pipe Min Max oper...

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