Superior Valves For SuperiorFluid Control

Hays Fluid Controls makesthe world’s most effective auto-matic flow control valves and related vital components for theHVAC industry. Hays productswork quietly and dependably tocontrol water flow, savingmoney and energy with theirunique designs.

Hays Fluid Controls flowrates range from as low as 0.5GPM to over 7,000 GPM, with pressure differentials from 2 to150 PSID.

Hays products include:• Manual and automatic flow

controls• Hose kits and piping pack-

ages, fully assembled• Solenoid valves• Flow meters and flow com-

puters

• Custom-designed products for a wide range of special applications

Saving You Money, Protecting Your Equipment

Hays automatic valve prod-ucts are much more economicalthan manual systems. In a typical manual balancing sys-tem, circuit balancing valves arerequired at all terminal units aswell as the riser. The system hasto be tediously (=expensively)rebalanced whenever a new ter-minal unit is brought online.

Hays automatic valves areonly required at the terminalunits. No controls are neededon the risers, and the systemdoes not have to be rebalancedwhen a new unit is added. Thiscan reduce installation costs60% or more, depending on theconfiguration.

In an office building withvarying cooling requirements indiverse locations, the HVAC system can reduce pump speedto meet only the chilled waterneeds for warmer locations,again enabling a substantialenergy savings.

Hays automatic valves saveeven more money by providingthe correct flow to protect muchmore expensive equipmentdownstream such as chillersand cooling towers, watersource heat pumps, fan coils, airhandlers, and other heating andcooling systems.

Hays automatic valves runfor decades without any needfor cleaning, saving substantial dollars over the lifecycle of asystem.

Mesurflo® Automatic Balancing Valves Manual Balancing Valves

Mesurflo® Automatic Balancing Valve Hose Kits Manual Balancing Valve Hose Kits

2 & 3 Way Automatic Balancing Valve Hard Pipe Packages 2 & 3 Way Manual Balancing Valve Hard Pipe Packages

Paddle Wheel & Mag Insertion Meters Mesurflo® Automatic Balancing Valve With ATC & Y-BallStrainer With PT’s

Hays Products Are 100%Tested And Guaranteed

Every single Hays productis carefully tested before ship-ping. Most include pipingconnections and are sealedonto a blister pack so thatinstallation in the field isquick and easy.

For installations involvingmultiple assemblies, we evenprint the precise location ofeach component in the build-ing, so there is no mistake,doubt or waste.

Hays is so confident of itsproduct quality, each comeswith a warranty for the life-time of the water or HVAC

system in which it is installed.There simply is no betterautomatic flow control prod-uct than Hays Fluid Controls.Custom Engineering And

Responsive ServiceOur highly experienced

engineering staff holds over35 patents and can custom-design a wide range of prod-ucts for many differentapplications.

Reduced weight, smalleror larger physical sizes, evenlower lifecycle costs, andcloser tolerances are just afew of the variables availableto meet your special needs.

Responsive cus-tomer service is oneof our core values atHays. You’ll find us

genuinely interested in help-ing you short-term and long-term.

We are dedicated to ourcustomers and our employ-ees, and our low turnover hasled to an exceptionally com-petent staff producing consis-tent quality.

For details, quotes, ormore information, call toll-free 800-354-4297 or email info@haysfluidcontrols.com.Additional information is alsoavailable on our website,www.haysfluidcontrols.com.

The “Gold Standard” ForControlling Water Flow In HVAC Systems

Hays’ patented Mesurflo®

automatic flow control valveshave been called the “GoldStandard” because theirunique features and benefitsmake them the ideal solutionfor controlling flow in water-based cooling and heatingsystems. Unlike other controlvalves which can be noisyand clog easily, Mesurflo®

offers you these significantbenefits:• Eliminates oscillation,

vibration, noise and feed-back in the system

• Non-clogging design that can be backwashed for easy cleaning

• Maintains proper flow ratefor high efficiency of the coil

• Reduces the number of valves required to balance the system

• Eliminates the high cost oftesting and balancing

• Additional devices may be added without affecting the system balance

• Accuracy provides 99.8% heat transfer

Features of Mesurflo®

Valves:

• Maintain constant flow when differential pressure ranges from 2 to 150 PSID

• Field changeable GPM• 13 models to choose from• Available from 0.5” to 20”,

0.5 GPM to 7200 GPM• Sweat or thread connec-

tions

Mesurflo® works to limit flow to a predetermined rate, resulting inmaximum efficiency of a downstream coil or device. It operateswithin a 2 to 150 PSID range. The large free-area opening of the ori-fice yields very little noise during operation.

Under increased pressure the Mesurflo® diaphragm moves moretightly onto the orifice to maintain the pre-selected flow rate. Athigher pressures larger particles may be trapped momentarily, butwhen the pressure subsides, the diaphragm moves back away fromthe orifice seat, and any trapped particles are released. The largefree-area opening of the orifice significantly reduces noise.

The cone-shaped parts on each side of the diaphragm enable asmooth flow of fluid over the diaphragm, then reformation of theflow on the downstream side, to allow non-turbulent flow throughthe pipe.

Hays Fluid Controls’ Mesurflo® Automatic Balancing Valves are protected byU.S. Patent 6,311,712. Mesurflo® is a Registered Trademark of Hays Fluid Controls.

Cross-sectional illustrations show a typical piping product with aMesurflo® valve under normal pressure and increased pressure.

Under normal pressure the Mesurflo® valve allows steady flowthrough the orifice. The rubber-based elastomeric diaphragmpresses flexibly against a polyphenyl-sulfone orifice with customdesigned openings, allowing small solid particles in the water topass through. As the pressure subsides, the diaphragm backs awayfrom the orifice, freeing trapped particles.

Hays FluidControls began as HaysManufacturing Company inErie, Pa., in 1869, manufactur-ing brass valves for oil, waterand beer.

During World War II it man-ufactured many types of brassvalves and fittings for militaryusage, including 40 mm shellsand bomb tail fuse assemblies.In 1946, Hays introduced sole-noid valves and flow controlsfor industrial use.

In 1977 Hays moved to Gas-tonia, N.C., and in 1986 the

com-panywas pur-chased by Romac Industries, a leadingpipeline products manufacturerin Seattle.

After extensive researchbased on its successful militaryproducts, Hays patented andbegan marketing its Mesurflo®valves to the HVAC industry in1994. Since then over 30,000

Hays valves have been pro-duced for HVAC uses. Contactus for a product custom-tailored to your needs.

Hays Fluid Controls114 Eason Rd.P. O. Box 580Dallas NC 28034800-354-4297www.haysfluidcontrols.com