top of page
hays_main_plans-wrench-pig-gauge_2.jpg
HAYS.logo.horiz.white.png
Mesurflo Logo_white_original.png

DESIGN COMPARISON

Mesurflo Logo_white_original.png

Non-Clogging

Quiet

Accurate

Lifetime Warranty

Only Mesurflo®
offers all four. 

VALVE INSERT OVERVIEW

Mesurflo® Automatic Balancing Valves are the industry’s best, trusted by military and commercial installers. 

During a controlled hydronic system test with debris, the Hays Mesurflo® 1 GPM valve easily outperformed the competition. While the competitor’s valve clogged with debris instantanly, the Hays Mesurflo® valve maintained steady flow, demonstrating its reliability in real-world conditions. 

diaphragm-detail.jpg
green-gradient-tall_5.jpg
spring-based-cartridge-cutaway_short.png

SPRING-BASED DESIGN

Spring-based design wears over time, is clog-prone, and noisy resulting in a short lifespan and limited 5-year warranty.

~ VS ~

MESURFLO®

real image dofi diaphragm.png

A diaphragm-based design that is durable, clog-resistant, and whisper-quiet, ensuring reliability and lifetime warranty. 

5-YEAR
Backed by a limited 5-year warranty, the 
spring-based design may wear over time.

WARRANTY

LIFETIME
Backed by a lifetime warranty, our durable design ensures long-term reliability.
EASILY CLOGGED
A clog-prone design with tight components that 
seize with debris and can’t backflush.

FLOW

NON-CLOGGING
A non-clogging design, no tight components, 
and backflush capability.
NOISY OPERATION
A conventional spring design is prone to 
chatter due to metal-on-metal contact.

SOUND

WHISPER QUIET
A self-dampening design that minimizes noise, 
making it virtually silent in operation.
SMALL OPERATING RANGE
A limited operating range with multiple spring options, 
where 2-32 PSID is most common.

RANGE

WIDE OPERATING RANGE
A wide operating range with a single setup, 
where 2-80 PSID is standard.

WARRANTY

Built to last, backed for life. Our lifetime warranty ensures unwavering reliability, giving you confidence in every product. If an issue arises, we stand behind our craftsmanship—because quality isn’t just a promise, it’s our standard. 

TECHNICAL DETAILS

Parameter
Specification
Type
Automatic Balancing Valve
Available Sizes
1/2" to 36"
Available Flow Rates
0.5 to 35,000 GPM
Available Materials
Brass, DZR Brass, Lead-Free Brass, Bronze, Ductile-Iron, Carbon Steel, & Stainless Steel
Operating Pressure Diff. Range
2-80 PSID (for most common flow rates)
Operating Temperature
32º F to 225º F
Glycol Tolerance
Up to 70%
Accuracy
± 10 %
bottom of page