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Watts Flow Monitor Valves

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Flow Monitor Valves measure system flow in low to medium flow rate HVAC units. Valves found here will provide your system with a highly accurate flow measurement.
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Product Image of 1/2" LFCSM-61 CSM-61 Flow Monitor, Lead Free (Sweat)
$167.80 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 4" FLGD Flow Measurement Valve, CSM81
4" FLGD Flow Measurement Valve, CSM81
SKU: 0036535
Watts
SKU: 0036535
Brand: Watts
$2,961.16 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 1/2" CSM-61 Flow Monitor (Threaded)
1/2" CSM-61 Flow Monitor (Threaded)
SKU: 0856736
Watts
SKU: 0856736
Brand: Watts
(2)
$140.61 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 3/4" CSM-61 Flow Monitor (Threaded)
3/4" CSM-61 Flow Monitor (Threaded)
SKU: 0856738
Watts
SKU: 0856738
Brand: Watts
(2)
$168.25 each
In Stock
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Get 1 by Tue, Feb 18
More Available
In Stock
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Get 1 by Tue, Feb 18
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Product Image of 1" CSM-61 Flow Monitor (Threaded)
1" CSM-61 Flow Monitor (Threaded)
SKU: 0856740
Watts
SKU: 0856740
Brand: Watts
(2)
$244.15 each
In Stock
Fast Track Logo
Get 14 by Tue, Feb 18
More Available
In Stock
Fast Track Logo
Get 14 by Tue, Feb 18
More Available
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Product Image of 1-1/4" CSM-61 Flow Monitor (Threaded)
1-1/4" CSM-61 Flow Monitor (Threaded)
SKU: 0856742
Watts
SKU: 0856742
Brand: Watts
(2)
$306.10 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 1-1/2" CSM-61 Flow Monitor (Threaded)
1-1/2" CSM-61 Flow Monitor (Threaded)
SKU: 0856744
Watts
SKU: 0856744
Brand: Watts
(2)
$339.26 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 2" CSM-61 Flow Monitor (Threaded)
2" CSM-61 Flow Monitor (Threaded)
SKU: 0856746
Watts
SKU: 0856746
Brand: Watts
$530.51 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 3" CSM-81 Flow Monitor (Flanged)
3" CSM-81 Flow Monitor (Flanged)
SKU: 0036541
Watts
SKU: 0036541
Brand: Watts
$2,183.28 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 2-1/2" CSM-81 Flow Monitor (Flanged)
2-1/2" CSM-81 Flow Monitor (Flanged)
SKU: 0036540
Watts
SKU: 0036540
Brand: Watts
$1,811.43 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 0.5-4 GPM D3499375 FlowGuard, 1" Half Union (MPT)
$171.58 each
In Stock
Get 2 by Wed, Feb 19
In Stock
Get 2 by Wed, Feb 19
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Product Image of 1" iDROSET CSD Flow Measurement & Balancing Valve (FNPT)
$217.59 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
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Get it by Tue, Mar 18 - Tue, Apr 15
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Product Image of 3/4" iDROSET CSD Flow Measurement & Balancing Valve (FNPT)
$206.89 each
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Backorder
Get it by Tue, Mar 18 - Tue, Apr 15
Resources
FAQs, Manuals & Videos
Articles
More About Watts Flow Monitor Valves
Flow Monitor Valves measure system flow in low to medium flow rate HVAC units. Valves found here will provide your system with a highly accurate flow measurement.
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13 items
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Price ▲
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Size

1/2" (2)
3/4" (2)
1" (3)
1-1/4" (1)
1-1/2" (1)
2" (1)
2-1/2" (1)
3" (1)
4" (1)

Connection Type

Flanged x Flanged (3)
FNPT x FNPT (2)
MPT x FPT (1)
Sweat (1)
Threaded (6)

Review Score

(6)

Price Range

$100 to $200 (4)
$200 to $300 (3)
$300 to $400 (2)
$500 to $600 (1)
$1500 to $2000 (1)
$2000 to $2500 (1)
$2500 to $3000 (1)
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