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Caleffi 145553A 5G3 : FLOWMATIC PICV 3/4" Female NPT

Caleffi 145553A 5G3 : FLOWMATIC Pressure Independent Control Valve (PICV), 3/4" Female NPT, 0.53 - 5.3 GPM

Caleffi

MSRP: $216.00
Your Price:  $144.61
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SKU:
145553A 5G3
UPC:
8016615695144
Condition:
New
Availability:
Ships in 1 Week
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Connection3/4" Female NPT
Adjustable Flow Range0.53 to 5.3 GPM
Max Pressure360 psi
Warranty2-Year Limited

The Caleffi 145553A 5G3 is a FLOWMATIC pressure independent control valve with 3/4" Female NPT connections, adjustable across 0.53 to 5.3 GPM.

Best for multi-zone systems where differential pressure swings would otherwise force repeated rebalancing.

Specifications transcribed from Caleffi technical brochure 01262/23 NA. Last verified August 2026.

Warranty

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product free from defects in material and workmanship for two years from the date of transfer of ownership - the point Caleffi hands the goods to the first carrier - subject to correct installation and use. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents.

Key Features

Pressure Independent Flow Control

Holds the designed flow rate regardless of differential pressure swings elsewhere in the system, so zones stay balanced as other valves open and close.

Holds the Selected Design Flow

Once the valve is set to its design flow, that flow is maintained as differential pressure changes elsewhere in the system. Initial setup is still required at commissioning.

Adjustable 0.53 to 5.3 GPM

Flow is adjustable across 0.53 to 5.3 GPM, set manually or by an actuator. The suffix identifies the range, not a single fixed setting.

Glycol Compatible

Rated for glycol solutions to 50 %, covering freeze-protected circuits.

Technical Specifications

Product TypePressure Independent Control Valve
Connection Size3/4"
Connection TypeFemale NPT
Adjustable Flow Range0.53 to 5.3 GPM
Maximum operating pressure360 psi
Medium temperature range-4 - 248 °F
Maximum glycol %50 %
Mediumwater, glycol solutions
MaterialDZR brass
SeriesFLOWMATIC
Published weight (Caleffi "Wt.")1.0 lb

Documentation

PDF
PDF
PDF
Sell sheet
03669_NA
PDF

Related Products

Frequently Asked Questions

What does Caleffi 145553A 5G3 do?

It is a pressure independent control valve. It holds the design flow rate for its zone regardless of differential pressure changes elsewhere in the system, so zones do not need rebalancing as other valves modulate.

What connection does Caleffi 145553A 5G3 use?

It is supplied with 3/4" Female NPT connections. Other sizes and connection styles in the range are listed under Related Products.

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product to be free from defects in material and workmanship for two years from the date of transfer of ownership (when the goods are handed to the first carrier), when installed and operated in accordance with published instructions. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents. ZOT Supply is an authorized Caleffi distributor.
Product Type:
Pressure Independent Control Valve
Product Family:
Pressure Independent Control Valves (PICV)
Series:
FLOWMATIC
Connection Type:
Female NPT
Connection Size:
3/4 inch
Adjustable Flow Range:
0.53 to 5.3 GPM
Max Operating Pressure:
360 psi
Medium Temperature Range:
-4 - 248 deg F
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