Festo VZQA-C-M22U-6-GG-V4V4S1-4 Bedienungsanleitung

Festo Nicht kategorisiert VZQA-C-M22U-6-GG-V4V4S1-4

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VZQA-C-M22U

Pinch valve

Festo SE & Co. KG

Ruiter Straße 82

73734 Esslingen

Deutschland

+49 711 347-0

www.festo.com

Operating instruction

8179536

2022-09h

[8179538]

Translation of the original instructions

1 Applicable documents

All available documents for the product

è www.festo.com/sp.

Document Product Table of contents

Assembly instructions Seal cartridge VAVC-Q2-M22U Changing the seal cartridge

Tab. 1: Applicable documents

2 Safety

2.1 Safety instructions

–Only use the product in its original condition without unauthorised modifica-

tions.

–Only use the product if it is in perfect technical condition.

–Take into account the ambient conditions at the location of use.

–Observe the specifications on the product labelling.

–Store the product in a cool, dry environment protected from UV and corrosion.

Keep storage times short. Storage temperature è 11 Technical data.

Media

–Use only media in accordance with the specifications

è 11 Technical data.

–Use only media to which the materials used for the seal cartridge and cover are

resistant. For evaluation of the media resistance

è www.festo.com.

–Use only media that will not cause dangerous reactions if mixed.

Piping

Depending on the flow medium and the operating conditions, pressure peaks that

exceed the permissible pressure range may develop in the system.

If the seal cartridge fails, the operating medium may enter the flow media circuit.

The pressure in the flow medium circuit may increase accordingly.

–Design the flow media circuit for at least the set operating pressure.

–It may be necessary to include a pressure-relief valve in the media line to

comply with the limit values.

The separation between the media spaces is no longer guaranteed if wear causes

the seal cartridge to leak. The flow medium may then enter into the pilot circuit

and escape, e.g. at a silencer.

–Use an appropriate check valve to protect the pilot circuit against ingress of the

flow medium.

–Secure possible outlet points of the medium in such a way that persons cannot

come into contact with the medium.

The service life of the seal cartridge depends on the medium used, the operating

pressure and the switching speed.

–Limit the switching speed with a suitable throttle valve or control valve.

Very high temperatures may damage the seal cartridge

è 11 Technical data.

–Do not weld piping in close proximity to the valve.

Return to Festo

Hazardous substances can endanger the health and safety of persons and cause

damage to the environment. To prevent hazards, the product should only be

returned if explicitly requested by Festo.

–Consult your regional Festo contact.

–Complete the declaration of contamination and attach it to the outside of the

packaging.

–Comply with all legal requirements for the handling of hazardous substances

and the transport of dangerous goods.

2.2 Intended use

The pinch valve controls gaseous, dusty and solid media as well as mixtures of

substances in piping systems.

The pinch valve VZQA-C-M22U-...-...S1 can be used in the food zone.

2.3 Training of qualified personnel

Work on the product may only be carried out by qualified personnel who can

evaluate the work and detect dangers. The qualified personnel have knowledge

and experience in process automation.

3 Additional information

–Contact the regional Festo contact if you have technical problems

è www.festo.com.

–Accessories è www.festo.com/catalogue.

4 Product overview

4.1 Product design

Fig. 1: Product design

1 Housing cover

2 Housing

3 Threaded connection or clamp

ferrule for connecting media-car-

rying piping

4 Operating medium port

Inside the valve is a replaceable seal cartridge with a tubular shut-off element.

4.2 Function

The pinch valve is a pneumatically actuated 2/2-way valve. In its normal position

the valve is open (N/O).

Fig. 2: Circuit symbol

If the valve is pressurised with operating pressure, the tubular shut-off element

is pinched shut and the valve is closed. After removal of the operating pressure,

the shut-off element is opened by its intrinsic tension and the pressure of the

medium. The free passage when the valve is opened ensures minimum flow

resistance and prevents the valve becoming blocked or clogged.

5 Mounting

Requirements

–The piping system is unpressurised and medium is not flowing through it.

–The lines are clean.

–The pipe ends are mounted.

–All transport packaging has been removed. The material used in the packaging

has been specifically chosen for its recyclability.

–Protective measures are installed in the system, e.g. flow control valves or

control valve, check valve, pressure-relief valve.

VZQA-C-M22U -6 -15 -25 -50

Flow control

valve,

control valve

Recommended standard

nominal flow rate

[l/min] 10 40 40 40

Recommended nominal

width

[mm] 0.5 1 1 1

Tab. 2: Mounting

5.1 Cleaning the valve

• There may be traces of residual grease on the valve as a result of the produc-

tion process. Clean the valve immediately before mounting.

5.2 Connecting the flow medium pipe

NOTICE

To eliminate direct access to the valve opening during operation, connect a line to

both ports, even if the valve is located at the end of the piping.

For VZQA-C-M22U-...-G/-T with female thread:

•

• Screw connection [3] to the pipe.

VZQA-C-M22U -6 -15 -25 -50

VZQA-C-M22U-...-G/-T-...V4

VZQA-C-M22U-...-G/-T-...AL

[Nm] 15 35 40 40

VZQA-C-M22U-...-G/-T-...POM [Nm] – 8 10 –

For VZQA-C-M22U-...-S1/-S5/-S12 with clamping socket:

• Close the clamp ferrule of the pipe and the clamp ferrule of the valve with the

seal together and tighten them with the clamp of the clamp seal.

5.3 Connecting the operating medium pipe

1. Mount a fitting on the port [4] for the operating medium.

VZQA-C-M22U -6 -15 -25 -50

Max. screw-in depth [mm] 4.5 5 6 8

2. Connect the pipe for the operating medium.

6 Commissioning

Requirements

–Protective measures are installed in the system, e.g. flow control valves or

control valve, check valve, pressure-relief valve.

–The valve is fully mounted and connected.

6.1 Checking operating conditions

1. Check the operating conditions and limit values è 11 Technical data.

To ensure a long service life for the seal cartridge keep the pressure differ-

ence between the medium pressure and the operating pressure as low as

possible.

Use a throttle valve or a control valve

è 5 Mounting.

2. Check that the connections are tight.

3. Take into account the compatibility of the devices in the system for the max-

imum pressure and the pressure peaks. If necessary, adjust the application

parameters.

6.2 Commissioning the valve

WARNING

Risk of injury from combustion and chemical burns.

The valve only closes completely if the required differential pressure between the

medium pressure and the operating pressure is ensured. Otherwise, medium can

escape and injure people.

• Secure possible outlet points of the medium (e.g. line ends) to prevent any

contact with the medium.

• Wear specified protective equipment.

CAUTION

Risk of crushing inside the valve.

The shut-off element inside the valve closes with great force. Fingers can be

crushed.

• Do not reach inside the valve.

• Do not commission the valve until it is fully assembled.

1. Feed in flow medium.

2. Apply operating pressure to the valve.

ÄThe valve closes.

3. Actuate the valve several times, approx. 10 times.

7 Operation

WARNING

Risk of injury due to hot surface.

The valve can become hot if the temperature of the medium is high.

• Do not touch the valve during operation or immediately afterward.

1. Observe the operating conditions.

2. Comply with the permissible limit values.

3. Comply with maintenance conditions è 8 Maintenance.

4. Recommendation: switch the valve several times per day.

After longer idle times:

• Actuate the valve several times and check that it functions correctly.

8 Maintenance

WARNING

Risk of injury from combustion and chemical burns.

The media in the piping system and the valve can be hot and under pressure.

Traces of medium can remain in the product and can escape when open or

dismantled.

• Allow the valve and piping to cool and depressurize them.

• Wear specified protective equipment.

8.1 Checking and cleaning the valve

• Inspect the valve regularly from the outside for leakage and function.

• Clean the valve regularly.

8.2 Checking and replacing the seal cartridge

NOTICE

The seal cartridge may only be changed by qualified technicians in accordance

with the assembly instructions è 1 Applicable documents.

The seal cartridge is subjected to mechanical loads and ageing. A damaged or

worn seal cartridge results in leakage.

• Check the seals and seal cartridge regularly and replace if necessary. The

intervals depend on the medium.

• Replace seal cartridge and seals if they are damaged. Use a seal cartridge

with the same specification.

Replace the seal cartridge at the specified interval:

–VZQA-C-M22U-6/-15/-25: maximum 0.5 million switching cycles.

–VZQA-C-M22U-50: maximum 300000 switching cycles.

9 Fault clearance

Malfunction Cause Remedy

Valve does not close or closes

too slowly

Medium pressure is too high or

operating pressure too low

–Set differential pressure

to min. 0.25 MPa (2.5

bar, 36.25 psi) by

increasing operating pres-

sure or reducing pressure of

medium

Too many or too large contami-

nants in the medium

Valve clogged –Clean the valve or replace

the seal cartridge

Operating medium port

blocked

–Clean or replace the oper-

ating medium port

Seal cartridge faulty –Replace seal cartridge

Valve does not open or opens

too slowly

Medium pressure too low –Increase medium pressure

Shut-off element is stuck

together because the material

of the shut-off element is not

suited for the medium

–Replace product with a

product variant made of

appropriate materials

Operating pressure is still

present

–Shut off operating pressure

Leakage Seal cartridge faulty –Replace seal cartridge

Tab. 3: Fault clearance

10 Removal

WARNING

Risk of injury from combustion and chemical burns.

The media in the piping system and the valve can be hot and under pressure.

Traces of medium can remain in the product and can escape when open or

dismantled.

• Allow the valve and piping to cool and depressurize them.

• Wear specified protective equipment.

1. De-pressurise the piping and the operating medium piping.

2. Allow the valve and piping to cool.

3. Drain the piping and valve completely.

• Make sure no one is located in front of the outlet opening.

• Collect the outflowing flow medium in a suitable container.

4. Disconnect the operating medium line from the valve.

5. Disconnect the piping connections and remove the valve.

11 Technical data

VZQA-C-M22U -6 -15 -25 -50

Design Pinch valve, pneumatically actuated

Nominal width DN 6 15 25 50

Actuation type Pneumatic

Sealing principle Soft

Mounting position Any

Type of mounting In-line installation

Valve function 2/2, open, monostable

Flow direction Reversible

Reset method Rebound resilience

Type of control Externally controlled

Switching time on [ms] 125 250 250 200

Flow rate Kv1) [m3/h] 0.7 5 18 72

Switching time off [ms] 125 250 250 1000

Pressure of medium [MPa] 0 … 0.4 0 … 0.2

[bar] 0 … 4 0 … 2

[psi] 0 … 58 0 … 29

Operating pressure [MPa] 0.1 … 0.65 0 … 0.45

[bar] 1 … 6.5 0 … 4.5

[psi] 14.5 … 94.25 0 … 65.25

Burst pressure [MPa] 1.6

[bar] 16

[psi] 232

Nominal pressure PN of

process valve

Ambient temperature [°C] –5 … +60

Product weight è www.festo.com/catalogue

Max. viscosity [mm2/s] 4000

Differential pressure

VZQA-C-M22U-...-...N [MPa] 0.25 –

[bar] 2.5 –

[psi] 36.25 –

VZQA-C-M22U-...-...E [MPa] 0.25

[bar] 2.5

[psi] 36.25

VZQA-C-M22U-...-...S1 [MPa] 0.25 0.30 –

[bar] 2.5 3 –

[psi] 36.25 43.5 –

Operating medium

VZQA-C-M22U-...-...N Compressed air in accordance with ISO

8573-1:2010 [7:4:4]

–

VZQA-C-M22U-...-...E Compressed air in accordance with ISO 8573-1:2010

[7:4:1]

VZQA-C-M22U-...-...S1 Compressed air in accordance with ISO

8573-1:2010 [7:4:4]

–

Medium

VZQA-C-M22U-...-...N Compressed air in accordance with ISO

8573-1:2010 [–:–:–]

–

VZQA-C-M22U-...-...E Compressed air in accordance with ISO 8573-1:2010

[–:–:1], water

VZQA-C-M22U-...-...S1 Compressed air in accordance with ISO

8573-1:2010 [–:–:–]

–

Food-safe

VZQA-C-M22U-...-...E Supplementary material information

è www.festo.com

VZQA-C-M22U-...-...S1 Yes, declaration of conformity

è www.festo.com

–

Temperature of medium

VZQA-C-M22U-...-...N [°C] –5 … +60 –

VZQA-C-M22U-...-...V4E [°C] –5 … +100

VZQA-C-M22U-...-...ALE [°C] –5 … +100

VZQA-C-M22U-...-...POME [°C] –5 … +80

VZQA-C-M22U-...-...V4S1 [°C] –5 … +150 –

VZQA-C-M22U-...-...ALS1 [°C] –5 … +150 –

VZQA-C-M22U-...-...POMS1 [°C] –5 … +80 –

VZQA-C-M22U-…-V4V4E-4-

EXA

[°C] –5 … +90 –

Storage temperature

VZQA-C-M22U-...-...N [°C] 6 … 8 –

VZQA-C-M22U-...-...E [°C] 6 … 8 5 … 25

VZQA-C-M22U-...-...S1 [°C] 5 … 30 –

VZQA-C-M22U-…-V4V4E-4-

EXA

[°C] 6 … 8 –

Angle seat fitting connection

VZQA-C-M22U-...-G G 1/4 G 1/2 G 1 G 2

VZQA-C-M22U-...-T 1/4 NPT 1/2 NPT 1 NPT 2 NPT

VZQA-C-M22U -6 -15 -25 -50

VZQA-C-M22U-...-S1 Clamp ferrule in accordance with

ASME BPE, type A

–

VZQA-C-M22U-...-S5 Clamp ferrule in accordance with DIN 32676-A

VZQA-C-M22U-...-S12 – Clamp ferrule in accordance

with ASME BPE, type B

Operating medium port M5 G 1/8

Housing material

VZQA-C-M22U-...-V... High-alloy stainless steel

VZQA-C-M22U-...-AL Wrought aluminium alloy

Housing cover material

VZQA-C-M22U-...-...V4 High-alloy stainless steel

VZQA-C-M22U-...-...AL Wrought aluminium alloy

VZQA-C-M22U-...-...POM POM –

Seal material FPM VMQ

Shut-off element material

VZQA-C-M22U-...-...N NBR –

VZQA-C-M22U-...-...E EPDM

VZQA-C-M22U-...-...S1 Silicone –

1) At +20 °C, pressure of medium 0.1 MPa at the valve inlet, free outlet

Tab. 4: Technical data

Produktspezifikationen

Marke:	Festo
Kategorie:	Nicht kategorisiert
Modell:	VZQA-C-M22U-6-GG-V4V4S1-4

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