Flowserve 191400 Series User Manual

Page 5

SAFETY

The valves described in this documentation are de-

signed and produced so that they do not present any

hazard for the operating and service personnel or for

the system, in which the valves are installed, when

handled properly observing all important instructions

and safety precautions.

All installation and removal work, performed within the

scope of maintenance or repair to the valves, should

be accomplished only by trained personnel. When

assembling or disassembling, observe the installation

instructions. Proceed precisely as speciﬁed in the in-

stallation and removal instructions to prevent severe

injury to the operating and service personnel.

The operator of the system is responsible for ensur-

ing that the installation, operating and maintenance

personnel assigned have the required qualiﬁcations.

The operator is also responsible for ensuring that the

personnel in question are familiar with the documenta-

tion and safety regulations.

The values listed in the chapter “Technical Data”, such

as pressure, temperature, installation locations, etc.,

should be observed under all circumstances.

All materials and sealing elements must be suitable for

these operating conditions and the media, with which

the valves come into contact. The system operator

is solely responsible for all risks and consequences

resulting from failure to observe these operating

parameters. Unauthorized modiﬁcations to the valves

have an effect on the intended application and are not

permissible.

In addition to these instructions, all local safety and

accident prevention regulations apply.

INSTALLATION

5.1

General Instructions

We urgently recommend having the installation

work accomplished by trained, expert personnel.

5.2

Delivery Status

The valves are tested at the factory and ready for in-

stallation when shipped. The valve can be connected

to the product line with weld ends or selected pipe

connections.

5.3

Installation Guidelines

5.3.1 Installation Space

Before starting installation determine and deﬁne the

connection axes. Take installation dimensions from

dimension drawings. Provide for space for operation

as well as service.

5.3.2 Installation

Do not subject to pressure or tension.

5.3.3 Installation Position

Vertical, to ensure that valve and line run empty.

5.4

Welding Guidelines

Range of application Welding between weld connections

and piping acc. to DIN 11850 Series 2

Welding procedure

TIG (tungsten Inert gas welding)

Type of weld

• Prepare weld acc to DIN 2559

(joint shape I / for I-welds)

• Welds conforming to EN 25817

⇒ evaluation group B (high)

butt weld I-joint acc. to DIN 8532

5.4.1 Welding in valves

Installation state

Single-piece body

CAUTION: To prevent damage to sealing materials and

functioning parts, always weld the body in a disas-

sembled state. Disassemble according to disassemble

instructions.

5.4.2 Preparation of weld

Cut off ends of pipe even and deburr. Adjust weld-

ing ends on housing so that they make radially and

axially level contact with the piping (centering tool).

Ensure that no gap is present at the welding ends

in contact with each other, because otherwise the

forming gas would ﬂow out reducing the corrosion

resistance of the weld.

5.4.3 Welding

Connect forming gas. Tack 3-4 points. TIG welding,

manual or orbital (machine welding).