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コントロールユニット Jafar 1350のPDF 操作およびメンテナンスマニュアルをオンラインで閲覧またはダウンロードできます。Jafar 1350 11 ページ。 Reduced pressure zone antipollution (anticontamination) check valves

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1 TECHNICAL DESCRIPTION

1.1 PRODUCT DESIGNATION AND IDENTIFICATION

The subject of this Operation and Maintenance Manual is:

Type BA reduced pressure zone antipollution (anticontamination) check valves.

1.2 USE

The P/N 1350 type BA low-pressure antipollution (anticontamination) check valves are intended for

protecting building water supply systems from contamination backflow within the pressure range from 0.05 MPa

to 1.6 MPa and temperatures up to +70ºC.

1.3 TECHNICAL SPECIFICATION

The P/N 1350 type BA low-pressure antipollution (anticontamination) check valves

are intended to protect water supply systems from contamination with backflow liquids.

- Available diameters:

- Max medium flow rate:

- Max operating pressure (PS):

- Max operating temperature (TS):

The valves are designed according to PN-EN 12729: 2005, a product standard for

protect potable water from backflow contamination, controllable backflow preventer with a reduced pressure

zone, family B, type A.

A distinct feature of the Type BA antipollution check valves is a two-chamber design which allows

isolating the incoming medium flow and automatic removal of medium residues from the reduced

pressure chamber.

Protection against pollution of potable water in water installations and general requirements

of devices to prevent pollution by backflow are explained in PN-EN 1717: 2003, where type BA valves can be

controllable and protect potable water supply installations from pollution with Category 2 liquids.

Antipollution valves can be used as check valves in indoor installation only when placed

between a water meter and the receiver(s) and generally in horizontal pipelines. The valve body features a flow

direction arrow.

The valve connection flange design is acc. to PN-EN 1092-2: 1999, with the sizes compliant with the

nominal pressure values.

Nominal PN pressure:

Installation length of flanged and bell socket tapped antipollution valves:

- see the size table.

DN65-DN250

OPERATION AND MAINTENANCE MANUAL

4 m/s;

1.0 MPa

1.6 MPa

70ºC.

- 0.6 MPa

- 1.0 MPa

- 1.6 MPa

devices which

01-2016