Installation and Operation Manual

Installation and Operation Manual

CV Technology, Inc.

15852 Mercantile Court

Jupiter, FL 33478

Phone: 561-694-9588

Fax: 561-694-9585

Website:

CVT Document #: 3015, Rev. 3

1-28-13

CV Technology, Inc.

Doc. #: 3015 01/28/13

Interceptor?-FV? Explosion Isolation

Flap Valve

Installation and Maintenance Manual

Page 2 (total 12)

Revision 3

Table of Contents

1.) General Overview

2.) Application Limitations

3.) Basic Dimensions, Weights and Components

4.)

Installation

5.)

Maintenance Requirements

NOTE: It is essential that all instructions in this manual be followed precisely to ensure

proper operation of the equipment

CV Technology, Inc., 15852 Mercantile Court, Jupiter, Florida 33478

Phone: 561-694-9588, Fax: 561-694-9585, Website:

CV Technology, Inc.

Doc. #: 3015 01/28/13

Interceptor?-FV? Explosion Isolation

Flap Valve

Page 3 (total 12)

Revision 3

Installation and Maintenance Manual

1.)General

GeneralOverview

Overview

1.)

The Interceptor?-FV? is a passive explosion isolation valve designed to stop a propagating dust

deflagration from traveling onward in an interconnected process pipe or duct. In normal operating

conditions, the flap valve is mechanically retained in the open position. During an upset condition, the

regular flow is interrupted and a flux of pressure coming from the opposite direction is designed to slam

and lock the flap shut. See Figure 1.1 for a visual representation of the valve¡¯s operation. Each

Interceptor?-FV? will also come equipped with an integrated position indicator for signaling a complete

closure of the valve. This consists of an inductive sensor and switch amplifier with an onboard SPDT

relay. The inductive sensor will be activated upon complete closure of the flap portion of the valve. The

switch amplifier will be remotely mounted and supplied with the appropriate power supply. The

onboard SPDT relay will change state upon activation of the inductive sensor.

Direction of flow

Stage 1: The regular flow of air and/or

material is flowing through the

interconnected pipe or duct in its intended

direction. The dust deflagration has been

initiated in the interconnected equipment.

Stage 2: The flux of pressure traveling the

opposite direction of the regular flow has

de-hinged the flap from its mechanical

retainer.

Stage 3: The flux of pressure traveling the

opposite direction of the regular flow has

slammed and locked the flap shut.

Figure 1.1: Visual representation of Flap Valve operation

operation

CV Technology, Inc., 15852 Mercantile Court, Jupiter, Florida 33478

Phone: 561-694-9588, Fax: 561-694-9585, Website:

Interceptor?-FV? Explosion Isolation

Flap Valve

CV Technology, Inc.

Doc. #: 3015 01/28/13

Installation and Maintenance Manual

Page 4 (total 12)

Revision 3

2.) Application

ApplicationLimitations

Limitations

A. The Interceptor?-FV? MUST be installed in process pipes or ducts where the direction of regular

flow and the direction of the potential dust deflagration are in opposite directions. See figure

2.1 for a visual representation of this requirement.

1.)

2.)

3.)

4.)

5.)

Filter

Process Fan

Rotary Airlock

Interceptor?-FV? Valve

Explosion Panel

Figure 2.1: Example Installation Schematic

B. Table 2.1 shows the Pred design limitations as well as the dust classifications limitations for all

sizes of Interceptor?-FV? valves.

Table 2.1: Flap Valve Design Limitations

Valve Size

4¡±

5¡± through 12.5¡±

14¡± through 25¡±

Maximum Pred Design of vessel

being isolated (bar)

1.0

0.90

0.65

Suitable Dust

Class

ST 1 and ST2

ST 1 and ST2

ST1

C. The maximum process velocity through the pipe or duct being isolated with an

Interceptor?-FV? valve is 115 ft/sec [35 m/s].

D. The minimum process velocity through the pipe or duct being isolated with an

Interceptor?-FV? valve is 65.5 ft/s [20 m/s].

E. The maximum process temperature through the pipe or duct being isolated with an

Interceptor?-FV? valve is 176¡ã F [80¡ã C].

CV Technology, Inc., 15852 Mercantile Court, Jupiter, Florida 33478

Phone: 561-694-9588, Fax: 561-694-9585, Website:

Interceptor?-FV? Explosion Isolation

Flap Valve

CV Technology, Inc.

Doc. #: 3015 01/28/13

Installation and Maintenance Manual

Page 5 (total 12)

Revision 3

F. The minimum ambient temperature surrounding an Interceptor?-FV? valve is -5¡ã F [-20¡ã C]. If any

Interceptor?-FV? is to be installed in an environment colder than this, proper heat tracing around

the flap connections and the top access panel shall be applied.

G. The Interceptor?-FV? valve must be installed on a horizontal process line and the lid of the valve

must be installed in the upright position.

H. The Interceptor?-FV? valve can only be utilized for clean air induction and dust collection lines. NO

product transfer lines can be isolated utilizing the Interceptor?-FV? valve.

I.

The maximum vacuum through the pipe or duct being isolated with Interceptor?-FV? valve sizes 4¡±

to 12.5¡± is 14.75 inHg (0.5 bar). The maximum vacuum through the pipe or duct being isolated with

Interceptor?-FV? valve sizes 14¡± to 25¡± is 11.8 inHg (0.4 bar).

J.

The flap portion of the Interceptor?-FV? valve is designed to shut when the positive pressure

moving in the opposite direction of flow increases to 1.5 PSI (0.1 bar).

K. Table 2.2 outlines the maximum process pressure drop across every Interceptor?-FV? valve size

assuming a line velocity of 65.5 ft/s.

Table 2.2: Maximum Pressure Drop across Valve

Valve Size

4¡±

5¡±

6¡±

8¡±

10¡±

12¡±

12.5¡±

14¡±

16¡±

18¡±

20¡±

22¡±

25¡±

[DN 100]

[DN 125]

[DN 150]

[DN 200]

[DN 250]

[DN 300]

[DN 315]

[DN 355]

[DN 400]

[DN 450]

[DN 500]

[DN 560]

[DN 630]

Maximum Pressure

Drop

[mbar]

1.85

1.90

1.95

2.05

2.15

2.25

2.30

2.40

2.50

2.60

2.75

2.80

2.85

Maximum Pressure

Drop

[inches of water]

0.742

0.762

0.783

0.823

0.863

0.903

0.923

0.963

1.01

1.04

1.104

1.12

1.14

L. Table 2.3 outlines the maximum allowable opening angles for all valve sizes.

Table 2.2: Maximum Allowable Opening Angle

Valve Size

4¡± [DN 100]

5¡± to 12.5¡± [DN 125 to DN 315]

12.5¡± to 25¡± [DN 315 to DN 630]

Maximum Allowable Opening Angle

ST1 Dust

St2 Dust

50¡ã

32¡ã

55¡ã

55¡ã

55¡ã

N/A

CV Technology, Inc., 15852 Mercantile Court, Jupiter, Florida 33478

Phone: 561-694-9588, Fax: 561-694-9585, Website:

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