Product Overview

ManualsBrandsCaleffi ManualsBalancing Valves3/4" Female NPT Low Lead Manual Balancing Valve (5.1 Cv)

01251/14 NA

Balancing valve,

fixed orifice

130 series

Product range

130 series Fixed oriﬁce balancing valve sizes 1/2”, 3/4”, 1”, 1 1/4”, 1 1/2”, and 2" NPT female

CALEFFI

Dimensions

Technical specifications

Materials

Valve

Body: low-lead brass

Bonnet: low-lead brass

Control stem: low-lead brass

Valve plug: stainless steel

Seal seat: brass

Hydraulic seals: EPDM

Stem guide bearing: PTFE

Adjustment knob: PA6G30

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

Reduction of Lead in Drinking Water Act Compliant: 0.25% Max.

weighted average lead content. Reduction of Lead in Drinking Water

Act Certiﬁed by IAPMO R&T.

Performance

Suitable Fluids: water, glycol solutions

Max. percentage of glycol: 50%

Max. working pressure: 232 psi (16 bar)

Working temperature range: -4 - 250°F (-20–120°C)

Accuracy: ±10%

Number of adjustment turns: 6

Threaded connections: 1/2”– 2" FNPT

ACCREDITED

ISO 9001 No. 0003

ISO 9001 FM 21654

Function

Calefﬁ 130 series low-lead brass manual balancing valves are used

to measure and adjust the ﬂuid ﬂow rate in hydronic or plumbing

circuits. The flow rate is directly determined from the pressure

differential (from Venturi effect) measured across the two test ports.

The valve design is “ﬁxed oriﬁce” with both pressure ports located

upstream of adjustment plug and away from any pressure variations

from turbulence as ﬂow passes the adjustment plug – this feature

makes pressure measurements and thus ﬂow determination simpler

and more accurate compared to “variable oriﬁce” type balancing

valves. Flow rate is calculated by simple formula or by easy reference

to ﬂow characteristic graph. Memory stop feature allows valve to be

closed, and later reopened to the original set position. Teﬂon stem

bearing guide prevents noise and vibration. The control stem threads

remain dry at all times, and thus are not prone to seizing from scale

after long in-operation periods. Stainless steel plug is highly resistant

to erosion from ﬂuid impurities.

N20

150

Code A B C Wt (lb)

130400A

1/2" 3" 4" 1

130500A

3/4" 3 1/4" 4" 1.2

130600A

1" 3 3/4" 4 1/4" 1.5

130700A

1 1/4" 4 1/2" 4 1/2" 2

130800A

1 1/2" 5" 4 3/4" 2.3

130900A

2" 6" 5 1/4" 2.5

Summary of content (9 pages)

PAGE 1
Balancing valve, fixed orifice CALEFFI 130 series 01251/14 NA ACCREDITED ISO 9001 FM 21654 ISO 9001 No. 0003 Function Caleffi 130 series low-lead brass manual balancing valves are used to measure and adjust the fluid flow rate in hydronic or plumbing circuits. The flow rate is directly determined from the pressure differential (from Venturi effect) measured across the two test ports.
PAGE 2
Advantages of balanced circuits Operating principle Balanced circuits have the following principal benefits: The 130 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. 1.
PAGE 3
Stainless steel valve plug (1) Memory stop High resistance to corrosion and erosion due to continual water flow or impurities in fluid. The 130 series balancing valve features a memory stop that allows the valve to be reopened to the initial position if it has been closed for any reason such as isolating components in the balanced circuit. Locking the position to be memorized requires the use of a 2.5 mm hex key.
PAGE 4
USING AND SETTING THE BALANCING VALVE Measuring the flow rate Connect a differential pressure gauge to the pressure test ports of the venturi of the valve.
PAGE 5
USING AND SETTING THE BALANCING VALVE Presetting The 130 series balancing valve features highly graduated adjustment which facilitates pre-setting. In commercial balancing applications where multiple balancing valves are used, significant labor time can be saved in the balancing process if in advance of being installed, the valves are pre-set to the expected knob position value. To pre-set, the anticipated pressure drop across the valve is required.
PAGE 6
Code 130800A 1 1/2 inch ∆p (feet of head) .5 Position 46.00 Code 130900A 2 inch 4.5 3.5 6 4 5 2 2.5 3 1 1.5 (psi) (bar) 20 1.0 ∆p (feet of head) Position 1 1.5 2 2.5 3 .5 3.5 4.5 4 5 6 (psi) 1.0 10 0.5 0.4 0.3 5 4 3 0.2 2 0.1 1 0.05 0.04 0.03 2.00 1.50 0.02 0.70 0.5 0.4 0.3 0.50 0.2 0.01 19.76 0.2 .015 12.5 .70 .50 .20 .30 .10 2 00 16.02 0.05 Cv Max Position Size 2" Cv 0.003 G (l/s) (gpm ) 13.68 12.5 12.3 100 9.97 50 8.72 5.6 7.0 6.94 2.8 5.75 20 4.
PAGE 7
Application diagrams To control the flow rate that flows to each riser. To control the flow rate supplying each emitter. To balance potable water distribution circuits. To balance zone branches in circuits with three-way valves.
PAGE 8
To balance circuts that supply the coils of air handling units. GR1 GR2 GR1 GR2 To balance circuits that supply cooling unit evaporators or condensers. To balance circuits that supply cooling towers. To balance the various substations in district heating systems. s s To balance the by-pass line in circuits for temperature control. To balance primary/secondary coupled circuits.
PAGE 9
SPECIFICATION SUMMARIES 130 series Balancing valve with fixed (venturi) orifice. Threaded connections 1/2”, 3/4", 1", 1-1/4", 1-1/2", 2" NPT Female by Female. Low-lead brass body, bonnet and control stem (< 0.25% lead content) certified by IAPMO R&T. Stainless steel valve plug. PTFE stem guide bearing. Brass seal seat. EPDM hydraulic seals. PA6G30 adjusting knob with memory stop. Pressure test ports with low-lead brass body and EPDM seal elements. Water and glycol solutions.