TESCOM Instrumentation Hand Valves, Gauge Valves, Manifolds with Multi-Turn-Rising Stem Installation Manual Manuals & Guides

ANDERSON GREENWOOD

Installation, Operation & Maintenance Instructions

Before installation these instructions must be fully read
and understood

Foreword

In accordance with the requirements of the
European Equipment Directive Ref: 97/23/
EC Article 3 Section 3 Sound Engineering
Practice, this document provides Installation,
Operation and Maintenance Instructions.

Anderson Greenwood Instrumentation
products covered by this document include:

• HandValves,gaugevalves,manifolds(and

accessories) with multi-turn-rising stem

• Ballvalveproductswithboresizesof25mm

(1”) or less.

Storage / Protection / Selection /
Spare parts

Storage

When Anderson Greenwood valves are to be
stored prior to being installed, storage should
be in the original delivery crates with any
waterproof lining and/or desiccant remaining
in place. Storage should be off the ground in a
clean, dry, indoor area.

Protection

Anderson Greenwood valves are delivered
with protection according to customer’s
specification, or in accordance with the Quality
Assurance Manual.

Selection

Ensure the valve’s materials of construction
and pressure/temperature limits shown on the
identification plate or valve body marking are
suitable for the process fluid and conditions. If
in doubt contact Anderson Greenwood.

Spare parts

Anderson Greenwood valves are identified
by a model number, which is marked on
the identification plate or valve body. This
reference should be quoted in respect of
any after sales queries, spare parts or repair
enquiries/orders.

SAFETY WARNING

It is important to take the following precautions before you start work on the valve:

1. Personnel installing or making any adjustments to the valves must be competent and utilise
approved equipment and clothing normally used to work with the process media where the
valve is installed.

2. The process line must be depressurised, drained and vented before installing the valve.

3. Handling of all valves must be carried out by personnel trained in all aspects of manual and

mechanical handling techniques.

4. Ensure the valve pressure/temperature limitations marked on the product are equal to or

better than the service conditions.

Installation

1. Flow Direction

Check valve nameplate for schematic arrangement, if so equipped, and note which connections

are for process, instrument or vent.

1.1 Multi turn rising stem valves are bi-directional unless marked with a flow direction arrow. If
a directional arrow is shown then the valve must be installed with the arrow pointing in
the direction of flow.

1.2 Ball valves are both uni-directional or bi-directional and the inlet connection is marked on the

valve body accordingly.

2. Connections

2.1 Threaded connections should be checked on both the valve and the mating component for

thread form and cleanliness. Taper threaded pipe joints depend on an intimate fit between
the male and female threads usually with the use of a thread tape or sealant. Parallel threads
usually depend on additional seals or gaskets. Do not use substantial wrenching force on a
tapered pipe joint until it is apparent that threads are properly engaged. Tapered pipe threads
are inherently a loose fit at entry.

2.2 Flanged connections and gaskets should be clean and undamaged. Ensure pipe mating

flanges are aligned correctly, bolting should be easily inserted through mating flange holes.
Tighten the flange bolts in a diagonal pattern.

2.3 Welded connections should be in accordance with the Code or jurisdictional regulations

applicable to the piping system construction and with complete and approved welding
procedures. Ensure that the weld profile is clean and in a suitable condition for welding.
All multi turn rising stem valves must be in a mid open position prior to welding. All ball
valves must be in either the fully open or fully closed position prior to welding.

3. Cleaning and Fitting

Should there be any possibility of abrasive particles (weld slag, sand, chemical clean residue etc.)

within the piping system, this could damage valve seating. The system needs to be thoroughly
flushed clean prior to operation. Fit the valve into pipe work ensuring easy access of the
operating mechanism (Handle / Handwheel / Tee bar).

Contact details

Please consult Anderson Greenwood for any additional information not covered by this document.
Anderson Greenwood Anderson Greenwood Century Valve & Machine, Instrumentation
Products Instrumentation Products 1915 - 30th Avenue, NE
Corrie Way 3950 Greenbriar Calgary
Bredbury Industrial Estate Stafford Alberta
Stockport Texas 77477 T2E 6Z5
Cheshire U.S.A. Canada
SK6 2ST
United Kingdom Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]
Tel:[phone]
Fax:[phone]

Emerson.com/FinalControl © 2017 Emerson. All rights reserved.

without notice AGIDR-0070-EN-1404

Installation, Operation & Maintenance Instructions

Operation

The handle of the valve has been designed to provide an adequate operating force to seal the valve
against the maximum pressure of the valve without the use of additional mechanical advantage. Do
not use additional mechanical advantage to operate the valve as this can cause valve damage.
Valves with a differential pressure across the seat require a torque to overcome the pressure. The
higher the pressure the greater the force to operate the valve.

1 Multi-Turn-Rising Stem Valves

All valves have rising stems with right hand thread. Rotate the handle counter-clockwise to open

and clockwise to close.

Valves with rising stems are provided with a backseat. This is a shoulder on the stem or other

part of the stem-disk assembly that engages a corresponding seat shoulder on the inner side of
the bonnet. It has become generally recognised that use of the stem back seat for stem sealing
may mask unsatisfactory condition of the stem packing. For this reason the use of the backseat
for normal operational stem sealing is not recommended. Backseats in rising stem valves should
be considered basically as stops to prevent overtravel when opening valves. Normal practice
should be to unseat the backseat slightly. If it is necessary to use the backseat for stem sealing
it should be recognised that backseats are usually smaller than the main seat and care should be
exercised to avoid applying excessive stem force in backseating.

2 Ball Valves

Soft seated ball valves are a simple open and close device, they should not be used as a

throttling device (i.e. valve should not be used with ball in mid position). Even when in storage
soft seated ball valves should ALWAYS be left in either the fully open or fully closed position.

2.1 Valve handles with 90° operation indicate the flow path through the valve, i.e. with a handle
parallel to the flow line indicates that the valve is in the open position. While a handle
perpendicular to the flow line indicates that the valve is in the closed position.

2.2 Valve handles with 180° opeation (F64,F68,P64 vent function only) indicates the flow path

through the vent port when the handle is pointing towards the port and is closed when the
handle is pointing away from the port.

Maintenance

1 Multi-Turn, Rising Stem Valves

Valves which remain in one position for long periods of time may be subject to some degree

of inoperability due to the loss of effective lubricants in threads, ageing of packing, surface
corrosion of moving parts or accumulation of harmful solids. In some applications it may be
desirable to schedule periodic partial or full cycle exercising of these valves.

Stem seal leakage usually results from seal wear, and can usually be corrected by tightening the

bonnet bushing. Overtightening can cause high stem friction, accelerated wear and shortened
stem seal life.

1.1 H7/H1-2, HD7, A-Series types

With the valve in a mid open position, loosen the Locknut, and tighten the Gland Follower

using a wrench until a slight resistance to stem movement is felt. This should be tightened
snugly but not over tightened. Check the stem tightness by turning the handle. If it feels too
loose you may tighten the Gland Follower more. If it feels too tight, the stem seal must be
replaced and the Gland Follower re-tightened.

The Gland Follower tightness is a matter of both judgement and experience. The basic

considerations are:
Too loose - the bonnet will leak
Too tight - the handle will be hard to turn and the stem seal may be over compressed and

damaged

Once the Gland Follower is properly adjusted, tighten the Locknut to lock the bushing in

place.

1.2 H1-3/8” & 5/8” Orifice, H5 - P.T.F.E. & Graphite packing types.

With the valve in a mid open position, tighten the packing nut. If, when re-pressurised,

the packing nut should be further tightened to stop stem leakage. When leakage stops the

packing nut should not be tightened any further.

Gland
follower

Locknut

H7/H1-2, H7, A-Series Types

Packing
nut

H1-3/8” & 5/8” Orifice, H5
PTFE & Graphite Packing Types

2 Ball Valve Maintenance (1/4 turn, soft seat)

Ball valves are normally sealed for life but valves which remain in one position for long periods

of time may be subject to some degree of inoperability due to the loss of effective lubricants
in threads, ageing of seats and seals, surface corrosion of moving parts or accumulation of
harmful solids. In some applications it may be desirable to schedule periodic partial or full
cycle exercising of these valves. Additional maintenance should be carried out by Anderson
Greenwood.

Emerson reserves the right to change the contents without notice
Engineering Doc n° 25.1618.021. Rev o SEP 01