CALEFFI 142 Series Manuale utente

Function

Product Range

Technical

Specifications

Performance

Technical

specifications

of insulation

Caleffi 142 series low lead manual balancing valves are used to measure and adjust

the fluid flow rate in hydronic or plumbing circuits. Characterized flow plug which

provides precise system balancing valves and highly accurate flow compared to

other setters with ball valve control. Turning the knob moves a plug within the fluid

stream which varies the flow rate. The flow rate is determined according to the

pressure drop value measured by a differential pressure meter connected to the

pressure test ports, included. The flow rate is directly determined from the pressure

differential created across the two test ports as fluid passes the adjustment plug. The

valve design is variable orifice with pressure ports located upstream and downstream

of the adjustment plug. Compared to fixed orifice designs where both test ports are

located upstream of the adjustment plug, for a given size and flow rate, the variable

orifice design produces a greater differential pressure value. In very low flow rate

applications and with good fluid quality, this larger differential pressure signal can

result in more accurate balancing. A memory stop feature allows the valve to be

closed, and later reopened to the original set position. Insulation shells are available,

purchase separately.

Material:

Body: DZR low-lead brass

Bonnet: DZR low-lead brass

Control stem: DZR low-lead brass

Hydraulic seals: peroxide-cured EPDM

Knob: PA6G30

Pressure test ports: DZR low-lead brass body, EPDM seal elements

NSF/ANSI 372-2011, Drinking Water System Components-Lead Content

Reduction of Lead in Drinking Water Act, California Health and Safety Code

116875 S.3874, Reduction in Drinking Water Act, certified by ICC-ES, file

PMG-1360.

Suitable fluids: Water and glycol solutions

Max. percentage of glycol: 50%

Maximum working pressure: 232 psi (16 bar)

Working temperature range: 14–250°F (-10–120°C)

Accuracy: ±15%

Number of adjustment turns: 4

Number of regulating positions: 8

Connections: Main: 1/2”–2” NPT female

Valve body pressure test ports: 1/4“ NPT female

Material: EPP

Thickness: ½inch (15 mm)

Density: 2.8 lb/ft3(45 kg/m3)

Thermal conductivity (ISO 2581): - at 50°F (10°C): 0.257 BTU·in/hr·ft2·°F (0.037 W/(m·K))

Working temperature range: 23 - 250°F (-5 - 120°C)

Variable Orifice Balancing Valve

18204.02

www.caleffi.com

142241A 1/2” NPT Female

142251A 3/4” NPT Female

142261A 1” NPT Female

142271A 1 1/4” NPT Female

142281A 1 1/2” NPT Female

142291A 2” NPT Female

Insulation code:

CBN142241A

CBN142251A

CBN142261A

CBN142271A

CBN142281A

142 Cv

3.4

5.0

7.5

12.9

16.8

22.0

Caleffi shall not be liable for damages resulting from stress corrosion, misapplication or misuse of it products.

CAUTION: All work must be performed by qualified personnel trained in the

proper application, installation, and maintenance of systems in accordance

with all applicable codes and ordinances.

CAUTION: Over-tightening and breakage can occur with the use of Teflon®

pipe joint compounds. Teflon®provides lubricity so that care must be

exercised not to over-tighten joints. Failure to follow these instructions

could result in property damage and /or personal injury.

WARNING: System fluids are under pressure or temperature can be

hazardous. Be sure the pressure has been reduced to zero and the

system temperature is below 100°F (38°C). Failure to follow these

instructions could result in property damage and/or personal injury.

SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety related instructions.

When used, the safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS

INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY

HAZARD.

WARNING: This product can expose you to chemicals including lead, which is known

to the State of California to cause cancer and birth defects or other reproductive harm.

For more information go to www.P65Warnings.ca.gov.

CAUTION: Make sure that all the connecting pipework is water tight.

CAUTION: If the series 142 balancing valve is not installed, commissioned

and maintained properly, according to the instructions contained in

this manual, it may not operate correctly and may endanger the user.

CONSIGNE DE SÉCURITÉ

Ce symbole d'avertissement servira dans ce manuel à attirer l'attention sur la sécurité concernant

instructions. Lorsqu'il est utilisé, ce symbole signifie.

ATTENTION! DEVENEZ ALERTE ! VOTRE SÉCURITÉ EST EN JEU ! NE PAS SUIVRE CES

INSTRUCTIONS PEUT PROVOQUER UN RISQUE DE SECURITE.

ATTENTION: Tous les travaux doivent être effectués par du personnel

qualifié formé à la bonne application, installation et maintenance des systèmes

conformément aux codes et règlements locaux.

ATTENTION: Un serrage excessif et la rupture peut se produire avec

l’utilisation de composés à joint de tuyau en Téflon®. Pouvoir lubrifiant Teflon®

permet de sorte qu’il faut prendre soin de ne pas trop serrer les articulations.

Le non-respect de ces instructions peut entraîner des dommages matériels

et/ou des blessures.

AVERTISSEMENT: Les liquides du système sont sous pression ou de la

température peuvent être dangereux. Être sûr que la pression a été réduite

à zéro et la température du système est inférieure à 100°F (38°C). Le non-

respect de ces instructions peut entraîner des dommages matériels et/ou des

blessures.Le non-respect de ces instructions peut entraîner des dommages

matériels et/ou des blessures.

ATTENTION: Si le vanne d’équilibrage, Série 142, n'est pas installé, mis en

service et entretenu correctement, selon les instructions contenues dans ce manuel,

il peut ne pas fonctionner correctement et peut mettre en danger l'utilisateur.

ATTENTION: S'assurer que tous les raccordements sont étanches.

Calefﬁ ne pourra être tenue responsable des dommages résultant de la corrosion, d’une mauvaise

utilisation ou une mauvaise utilisation des produits.

AVERTISSEMENT:

Ce produit peut vous exposer à des produits chimiques comme

le plomb, qui est connu dans l’État de Californie pour causer le cancer, dommages à la

naissance ou autre. Pour plus d’informations rendez-vous www.P65Warnings.ca.gov.

Installation

Assembly and disassembly of the valves should always be conducted while the

system is cold and not pressurized (fig. A).

Install according to the flow direction indicated by the arrow on the valve body

(fig. B).

Can be installed in any orientation (fig. C).

In order to ensure measuring accuracy, the balancing valve must be installed by

keeping an upstream straight section of at least five diameters, increased to at

least ten diameters if the nearest device upstream is a pump (fig. D).

PSI

C D

Installation Tip

Scan to view

142 Balancing Valve

Dimensions

1/2"

3/4"

Code

140

106,5

112,5

0,790

0,924

1,185

Mass (kg)

1/2"

3/4"

Code

142140

142150

142160

0,434

0,523

0,677

Mass (kg)

Code A B C Wt (lb)

142241A ½" 2 9/16" 2 ½" 1.0

142251A ¾" 2 15/16" 2 ½" 1.2

142261A 1" 3 7/16" 2 ½" 1.5

142271A 1 ¼" 3 ¾" 3 ¼" 2.3

142281A 1 ½" 3 15/16" 3 3/8" 3.0

142291A 2" 4 ¾" 3 3/8" 3.5

Operating Principle

The 142 series balancing valve is a

hydraulic device that controls the flow

rate of a fluid. Turning the knob moves a

plug within the fluid stream which varies

the flow rate. The flow rate is determined

according to the pressure drop value

measured by a differentialpressure meter

connected to the pressure test ports.

The opening position is indicated by the

numbered indicator (fig. E):

- The turn indicator (1) shows a

regulating scale scale from 0 to 4

(0 closure, 4 complete opening).

Turning the knob manually through

360° causes the indicator to move by

one unit.

Use of the balancing

valve: setting the

flow rate (fig F-G)

NOTE: the indications + and – on the

drawings refer to the pressure upstream

and downstream of the component

whose pressure differential is to be

measured.

For the connection of the pressure test ports

of the valve (2) with a differential pressure

measuring device (3), use a pair of fittings

with a measuring probe (fig. F).

a) As the thermal fluid passes,

measure the Δp of the valve with

any suitable differential pressure

measuring device(fig. G);

b)Using the “Hydraulic

characteristics” sheet (sheet

code 18203 supplied in the

pack), find the flow rate value

that is passing through the valve,

consulting the diagram “Δp-flow

rates” corresponding to the size

of the valve used.

c) Turn the knob and repeat steps a)

and b) until you reach the desired

value.

Correction for liquids of different densities

If using liquids with a density different from water at 70°F (20°C)

≈ 62.4 lb/ft3( ≈ 1 kg/dm3), correct the value of the measured head loss Δp

using the following formula:

Δp1= Δp

where:

Δp1= reference head loss in (psid(kPa))

Δp = measured head loss in (psid(kPa))

= fluid density in lb/ft3 (kg/dm3)

water

Memory Stop on the 142

series balancing valve

Once you have balanced the flow rate, insert a 2.5 mm hexagonal key into the

hole (5) in the balancing valve and fully turn it clockwise without forcing it. This

sets the valve’s maximum stroke position: if necessary, it is possible to shut off

the balancing valve in the circuit by turning the knob fully clockwise manually. To

restore the valve to its preset position, turn the adjustment knob fully counter-

clockwise (fig. J).

HI J

Locking/sealing the setting

position (fig. K)

Installing Insulation

Join the size-specific insulation shells

on the 142 series balancing valve, sold

under separate code number.

Caleffi North America, Inc.

3883 West Milwaukee Road

Milwaukee, WI 53208

T: 414.238.2360 F: 414.238.2366

5-30-18

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