Spirax Sarco 58 Manuale utente

IM-P041-03 CH Issue 5

Type 58

Control Valve

Installation and Maintenance Instructions

1. Safety information

2. Installation

3. Operation

4. Maintenance

5. Available Spares

IM-P041-03

CH Issue 5

0410052/5

Printed in GB

IM-P041-03 CH Issue 5

1. Safety information

Safe operation of this product can only be guaranteed if it is properly installed,

commissioned, used and maintained by qualied personnel (see Section 1.11) in

compliance with the operating instructions. General installation and safety

instructions for pipeline and plant construction, as well as the proper use of tools

and safety equipment must also be complied with.

1.1 Intended use

Referring to the Installation and Maintenance Instructions, name-plate and Technical

Information Sheet, check that the product is suitable for the intended use/application.

The products listed below comply with the requirements of the European Pressure

Equipment Directive 97/23/EC and carry the mark when so required. The products

fall within the following Pressure Equipment Directive categories:

Product Group 2

Liquids

Bronze DN20 - DN40 SEP

TW DN50 SEP

Cast iron DN50 SEP

DN80 - DN100 SEP

i) The products have been specically designed for use on water and other non-

hazardous liquids which are in Group 2 of the above mentioned Pressure Equipment

Directive. The products’ use on other uids may be possible but, if this is

contemplated, Spirax Sarco should be contacted to conrm the suitability of the

product for the application being considered.

ii) Check material suitability, pressure and temperature and their maximum and

minimum values. If the maximum operating limits of the product are lower than

those of the system in which it is being tted, or if malfunction of the product

could result in a dangerous overpressure or overtemperature occurrence, ensure

a safety device is included in the system to prevent such over-limit situations.

iii) Determine the correct installation situation and direction of uid ow.

iv) Spirax Sarco products are not intended to withstand external stresses that may

be induced by any system to which they are tted. It is the responsibility of the

installer to consider these stresses and take adequate precautions to minimise

them.

v) Remove protection covers from all connections before installation.

1.2 Access

Ensure safe access and if necessary a safe working platform (suitably guarded)

before attempting to work on the product. Arrange suitable lifting gear if required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or intricate work is required.

1.4 Hazardous liquids or gases in the pipeline

Consider what is in the pipeline or what may have been in the pipeline at some

previous time. Consider: ammable materials, substances hazardous to health,

extremes of temperature.

IM-P041-03 CH Issue 5

1.5 Hazardous environment around the product

Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases,

extremes of temperature, hot surfaces, re hazard (e.g. during welding), excessive

noise, moving machinery.

1.6 The system

Consider the effect on the complete system of the work proposed. Will any proposed

action (e.g. closing isolation valves, electrical isolation) put any other part of the

system or any personnel at risk?

Dangers might include isolation of vents or protective devices or the rendering

ineffective of controls or alarms. Ensure isolation valves are turned on and off in a

gradual way to avoid system shocks.

1.7 Pressure systems

Ensure that any pressure is isolated and safely vented to atmospheric pressure.

Consider double isolation (double block and bleed) and the locking or labelling of

closed valves. Do not assume that the system has depressurised even when the

pressure gauge indicates zero.

1.8 Temperature

Allow time for temperature to normalise after isolation to avoid danger of burns.

1.9 Tools and consumables

Before starting work ensure that you have suitable tools and/or consumables

available. Use only genuine Spirax Sarco replacement parts.

1.10 Protective clothing

Consider whether you and/or others in the vicinity require any protective clothing

to protect against the hazards of, for example, chemicals, high/low temperature,

radiation, noise, falling objects, and dangers to eyes and face.

1.11 Permits to work

All work must be carried out or be supervised by a suitably competent person.

Installation and operating personnel should be trained in the correct use of the

product according to the Installation and Maintenance Instructions.

Where a formal 'permit to work' system is in force it must be complied with. Where

there is no such system, it is recommended that a responsible person should know

what work is going on and, where necessary, arrange to have an assistant whose

primary responsibility is safety.

Post 'warning notices' if necessary.

1.12 Handling

Manual handling of large and/or heavy products may present a risk of injury. Lifting,

pushing, pulling, carrying or supporting a load by bodily force can cause injury

particularly to the back. You are advised to assess the risks taking into account the

task, the individual, the load and the working environment and use the appropriate

handling method depending on the circumstances of the work being done.

IM-P041-03 CH Issue 5

1.13 Residual hazards

In normal use the external surface of the product may be very hot. If used at the

maximum permitted operating conditions the surface temperature of some products

may reach temperatures of 200°C.

Many products are not self-draining. Take due care when dismantling or removing

the product from an installation (refer to 'Maintenance instructions').

1.14 Freezing

Provision must be made to protect products which are not self-draining against frost

damage in environments where they may be exposed to temperatures below freezing

point.

1.15 Disposal

The product is recyclable. No ecological hazard is anticipated with the disposal of

this product providing due care is taken. EXCEPT;

PTFE:

-Can only be disposed of by approved methods, not incineration.

-Keep PTFE waste in a separate container, do not mix it with other rubbish, and

consign it to a landll site.

1.16 Returning products

Customers and stockists are reminded that under EC Health, Safety and Environment

Law, when returning products to Spirax Sarco they must provide information on any

hazards and the precautions to be taken due to contamination residues or mechanical

damage which may present a health, safety or

environmental risk. This information must be provided in writing including

Health and Safety data sheets relating to any substances identied as hazardous

or potentially hazardous.

1.17 Working safely with cast iron products on steam

Cast iron products are commonly found on steam and

condensate systems. If installed correctly using good

steam engineering practices, it is perfectly safe.

However, because of its mechanical properties, it is

less forgiving compared to other materials such as

SG iron or carbon steel. The following are the good

engineeringpracticesrequiredtopreventwaterhammer

and ensure safe working conditions on a steam system.

Cast Iron is a brittle material. If the product is dropped

during installation and there is any risk of damage the

product should not be used unless it is fully inspected and

pressure tested by the manufacturer.

Safe Handling 

IM-P041-03 CH Issue 5

Steam

Trap set

Trap set Trap set

Steam

Gradient 1:100

30 - 50 metre intervals

Condensate Condensate

Condensate

Prevention of water hammer

Steam trapping

on steam mains:

Steam Mains - Do's and Don'ts:

Steam 





Steam

Flow Flow

IM-P041-03 CH Issue 5

Installing products or re-assembling after maintenance:

Thermal expansion:

Do not over tighten.

Use correct torque gures.

4 2

Flange bolts should be gradually tightened across

diameters to ensure even load and alignment.

Guides

Limit

rods

Limit rods

Fixing point

Medium

distance

Small

lateral

movement

Small

lateral

movement

Large

lateral

movement

Large

lateral

movement

Short

distance Fixing point

Axial

movement

Axial movement

Guides

Prevention of tensile stressing

Pipe misalignment:



IM-P041-03 CH Issue 5

2. Installation

2.1 Description

The standard Type 58 temperature control is a three port mixing or diverting valve suitable

for heating or cooling applications on water or oil systems.

2.1.1 Valve option

Valves are available for use on sea water or brine applications. Please contact Spirax Sarco

for further information.

2.2 Serial numbers

All Type 58 control valves bear a serial number which is stamped on the nameplate and

should be noted in all contacts with the manufacturer.

Fig. 1

DN50 and DN80

DN100

IM-P041-03 CH Issue 5

2.3 General arrangement

The Type 58 Control Valve should be fitted in a vertical position with the Port O at the bottom.

For ease of maintenance an isolating valve should be fitted in the line serving each port,

although for clarity these are not shown on the recommended installation layouts.

2.3.1 Recommended installation

- As a diversion valve to control the temperature of the cooling water and lubricating oil

serving a diesel engine. Figure 2 shows a typical layout.

- As a mixing valve to control the minimum return water temperature to a hot water boiler

in a low temperature hot water heating system (93°C maximum).

Figure 3 shows a typical layout for one boiler.

Where two or more boilers are used in parallel it is advisable to fit a separate Type 58 Control

Valve to each boiler as is shown in Figure 4.

Alternatively one or more Type 58 Valves may be fitted as Figure 5 to serve a range of boilers.

Fig. 3

Single boiler

application

Fig. 2 Typical installation

on diesel engine

Water Cooler

Water

Cooling

Circuit

Diesel

Engine

Type 58 Control Valve

Oil Cooler

Type 58

control

valve

Oil cooling circuit

X Z

Alternative Position for Pump

Boiler

Pump

IM-P041-03 CH Issue 5

Fig. 4 Multi-boiler installation with separate Type 58 on each boiler

2.4 Pipeline stress

It is important that line stresses such as can be caused by expansion or inadequate supporting

of the pipe, are not imposed on the valve body.

Fig. 5 Multi-boiler Installation served by one Type 58 control valve

Main Duty and

Standby Pumps

3 Port

Compensating

Control

Main Duty

and Standby Pumps

Mixing

Header Boiler Boiler Boiler

Pump Pump Pump

Type 58

control

valve

Type 58

control

valve

Type 58

control

valve

Flow to system Main Duty and Standby Pumps

Boiler Boiler Boiler

Type 58

control valve

Return from System Alternative Position for Pump

IM-P041-03 CH Issue 5

2.5 Temperature range

The sensor (18) is available in a choice of temperature settings as shown in Table 1 opposite.

Types A, B, C, D and E are the standard and type X is non-standard. In each case the

temperature at which the valve commences to move is stamped on the bottom end of each

sensor (18). In addition the type of sensor fitted to each valve is shown by the letter A, B, C,

D, E or X stamped on the nameplate fixed to the cover (3).

Fig. 6 DN50 and DN80

Indice

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