Samson 3347-1, 3347-7 Mounting And Operating Instructions

Translation of original instructions

EB 8097 EN

Type3347-7, cast body with welding

ends

Type3347-7, bar stock body with

threaded connections

Edition May 2016

Type3347-1 and Type3347-7 Pneumatic Control Valves

Note on these mounting and operating instructions

These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.

Î For the safe and proper use of these instructions, read them carefully and keep them for

later reference.

Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service

Department ([e-mail]).

The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samson.de > Service & Support > Downloads > Documentation.

Denition of signal words

Hazardous situations which, if not avoided,
will result in death or serious injury

Hazardous situations which, if not avoided,
could result in death or serious injury

Property damage message or malfunction

Additional information

Recommended action

DANGER

!

WARNING

!

NOTICE

!

Note

Tip

2 EB 8097 EN

Contents

EB 8097 EN 3

1 General safety instructions .............................................................................4

2 Design and principle of operation ..................................................................6

3 Assembling valve and actuator ......................................................................9

3.1 Assembly and adjustment ...............................................................................9

3.2 Option of preloading springs for "actuator stem extends"................................10

3.3 Different rated travels of valve and actuator ...................................................10

4 Installation ..................................................................................................11

4.1 Notes on installation ....................................................................................11

4.2 Signal pressure line ......................................................................................11

5 Operation ...................................................................................................11

6 Maintenance ...............................................................................................12

6.1 Replacing sealing parts and plug ..................................................................12

7 Description of nameplates ............................................................................14

8 Inquiries .....................................................................................................15

4 EB 8097 EN

General safety instructions

1 General safety instructions

− The control valve must be mounted, started up, or serviced by fully trained
and qualied personnel only; the accepted industry codes and practices
are to be observed. Make sure employees or third persons are not ex­posed to any danger. All safety instructions and warnings given in these
mounting and operating instructions, particularly those concerning installa­tion, start-up and maintenance, must be strictly observed.

− The control valves comply with the requirements of the European Pressure
Equipment Directive 2014/68/EU. Valves with a CE marking have a
declaration of conformity which includes information about the applied
conformity assessment procedure.
The declaration of conformity can be viewed and downloaded at
http://www.samson.de.

− To ensure appropriate use, only use the valve in applications where the op-
erating pressure and temperatures do not exceed the specications used
for sizing the valve at the ordering stage. The manufacturer does not as­sume any responsibility for damage caused by external forces or any other
external factors.

− Any hazards that could be caused in the valve by the process medium, the
operating pressure, the signal pressure or by moving parts are to be pre­vented by taking appropriate precautions.

− Proper shipping and storage are assumed.

− For installation and maintenance, make sure the relevant section of the
pipeline is depressurized and, depending on the process medium, drained
as well. Depending on the eld of application, allow the valve to cool
down or heat up to reach ambient temperature before starting any work
on it.

− When working on the valve, make sure that the pneumatic air supply as
well as the control signal are disconnected to prevent any hazards caused
by moving parts.

− Be particularly careful if the actuator springs are preloaded. Such actua-
tors are labeled correspondingly and can also be identied by three long
bolts protruding from the bottom of the actuator. Before starting any work
on the valve, relieve the compression from the preloaded springs.

EB 8097 EN 5

General safety instructions

According to the ignition risk assessment performed in accordance with EN13463-1:2009,
section 5.2, the non-electrical control valves do not have their own potential ignition source
even in the rare incident of an operating fault. As a result, they do not fall within the scope of
Directive 2014/34/EU.

Î For connection to the equipotential bonding system, observe the requirements specied in

section 6.4 of EN60079-14 (VDE0165 Part 1).