Product Overview

ManualsBrandsCaleffi ManualsBalancing Valves1" NPT FlowCal Automatic Flow Balancing Valve w/ Ball Valve (12 GPM)

01141/11 NA

FLOWCAL™ Automatic flow balancing

valve with polymer cartridge

121 series

Function

The FlowCal™ automatic flow balancing valve maintains a constant

fixed flow rate within varying system differential pressure ranges.

Operation is fully automatic requiring no manual adjustment. The

121 series utilize an exclusive, interchangeable flow cartridge,

made of anti-scale, low noise polymer for use in cooling and

heating systems. The FlowCal 121 series automatic flow balancing

valves are available with integral shut-off ball valve and optional

factory-installed pressure and temperature test ports.

Drain valves are also available as an accessory for installing in the

blowdown port connection.

Product range

121 Series Automatic flow balancing valve with polymer cartridge, ball valve, with and without Pressure

and Temperature Test ports

sizes 1/2" - 3/4" - 1" - 1 1/4"

CALEFFI

Dimensions

1/2"

3/4"

1 1/4"

3/16”

1/4”

8 5/8”

11/16”

15/16”

3/4”

15/16”

2 5/8”

5/8”

3 15/16”

15/16”

4 3/4”

3/4”

1/4"

1/2"

Code

121141 ...

121151 ...

121161 ...

121171 ...

Weight (lb)

2.7

5.0

BSI EN ISO 9001:2000

Cert. n∞ FM 21654

UNI EN ISO 9001:2000

Cert. n∞ 0003

Technical specifications

Valve body

Materials: - body: brass

- FlowCal flow cartridge: anti-scale polymer

- spring: stainless steel

- seals: EPDM

- ball: brass, chrome-plated

- ball seat and stem seal: PTFE

- lever: zinc coated steel with vinyl grip

- pressure and temperature test port plugs: brass

- pressure and temperature test ports:

body and cap- brass; core- nordel

- drain port plug: brass

Medium: water, glycol solutions

Max. percentage of glycol: 50%

Max. working pressure: 400 psi (400 WOG)

Working temperature range: 32-212°F (0-100°C)

Connections: 1/2", 3/4", 1", 1 1/4" FNPT or Sweat

with union x FNPT or Sweat

Pressure and temperature test ports connections: 1/4" FNPT

Blowdown port connection: 1/2" - 3/4": 1/4" FNPT

1" - 1 1/4": 1/2" FNPT

Flow rate: 27 flow rate settings ranging from 0.5 - 21 GPM

Flow accuracy: ±10%

Differential Pressure Control Ranges: 2-14,2-32,4-34,5-35,

3-32, 4-35 (see table on page 5)

Identification: metal plate with ball chain stating ∆P range

and fixed flow rate

Summary of content (8 pages)

PAGE 1
FLOWCAL™ Automatic flow balancing valve with polymer cartridge CALEFFI RE G IS D 121 series TERE BSI EN ISO 9001:2000 Cert. n∞ FM 21654 01141/11 NA UNI EN ISO 9001:2000 Cert. n∞ 0003 Function The FlowCal™ automatic flow balancing valve maintains a constant fixed flow rate within varying system differential pressure ranges. Operation is fully automatic requiring no manual adjustment.
PAGE 2
Circuit balancing DYNAMIC CIRCUIT BALANCING Modern heating and air-conditioning systems have to guarantee a high level of thermal comfort with a low energy consumption. This means supplying the system terminals with the correct design flow rates, to produce balanced hydraulic circuits.
PAGE 3
FLOWCALTM Automatic Flow Balancing Valves Function The FLOWCAL automatic flow balancing valve guarantees a constant flow rate when the upstream/downstream pressure differential varies. It is therefore necessary to refer to the ∆p vs. flow rate diagram and to a basic diagram illustrating the operation methods and the relevant variable effects.
PAGE 4
Construction details Polymer flow cartridge The flow rate cartridge is made of an anti-scale polymer, specially engineered for use in cooling, heating and domestic water systems, to prevent mineral buildup. Its mechanical behavior is excellent in a wide range of working temperatures, it features high resistance to the abrasion caused by continuous fluid flow, it is insensitive to the deposit of scale and is fully compatible with glycols and additives used in circuits.
PAGE 5
Ordering information for FLOWCAL 121 series Build the appropriate valve code number for your application from the order matrix below. Then select the desired flow rate from the flow rate table. When ordering, combine the appropriate code number from the matrix with the last 3 digits from the table below. Example: 121141AG50. 2nd 3rd 4th 5th 6th { { { { SERIES 2nd PT Test SIZE Ports 8th A The first three digits indicate the series: 1st 3rd PRESS. AND TEMP.
PAGE 6
Applications of FLOWCALTM ( ) Installation of FLOWCAL In air-conditioning systems, FLOWCAL devices must preferably be installed on the circuit return pipe. Some typical installation examples are given below. For use in line with various types of heat emitters: radiators, convectors, fan convectors, thermal strips, etc. T.A. T.A. To ensure constant flow rates to each emitter. T.A. To ensure constant flow rates (in any valve position) in circuits with traditional temperature control.
PAGE 7
Accessories NA1023 PT test ports 120 Y-Strainer Fast-plug pressure/temperature test ports for FlowCal automatic flow balancing valves. Their special construction enables rapid and accurate measurements without the need to leave expensive test equipment inline. The double-sealing core insures long and troublefree service. Can be used for: - checking the operation of FlowCal balancing valve; - checking for strainer clogging; - checking the heat output of the emitter terminals.
PAGE 8
We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice. CALEFFI Caleffi North America, Inc. 3883 West Milwaukee Road / Milwaukee, WI 53208 Tel: 414.238.2360 / Fax: 414.238.2366 / www.caleffi.