Engineering

GREAT Solutions

Solutions for
Power Generation
in the most
demanding
applications
02 Solutions for Power Generation

Contents

03 Introduction

04 Setting the standard for safety,

reliability and performance

05 Global manufacturing and support

06 Industrial turbines &

reciprocating engines

08 Key power generation

applications and solutions

14 Pulse valve technology

16 Redundant Valve Manifold (RVM)

systems

18 Redundant Valve Manifold (RVM)

functionality options

19 Hydraulic RVM systems

20 Natural gas solutions

22 Gas & air preparation solutions

23 High pressure regulation

24 Additional products
 Solutions for Power Generation 03

Engineering GREAT
solutions through people,
products, innovation
and service
IMI Precision Engineering is a world-leader in fluid and
motion control. Building close, collaborative relationships
with our customers, we gain a deep understanding of
their engineering needs and then mobilise our resources
and expertise to deliver distinctive products and solutions.
Wherever precision, speed and engineering reliability are essential,
our global footprint, problem-solving capability and portfolio of high
performance products enables us to deliver GREAT solutions which help
customers tackle the world’s most demanding engineering challenges.

> Reliability
We deliver and support our high quality products through our
global service network.

> High performance products

Calling on a world-class portfolio of fluid and motion control products
including IMI Norgren, IMI Buschjost, IMI FAS, IMI Herion and IMI Maxseal.
We can supply these singly, or combined in powerful customised
solutions to improve performance and productivity.

> Partnership & Problem Solving

We get closer to our customers to understand their exact challenges.
04 Solutions for Power Generation

Setting the
standard for safety,
reliability and
performance
Production

IMI Precision Engineering has over 80

years experience in providing oil, gas and
chemical solutions that are proven in safety,
reliability and durability, in the most extreme
environmental and operating conditions
Transportation around the globe.
With world-class product ranges including IMI
Norgren, IMI Buschjost, IMI Herion and IMI Maxseal,
our products are designed to work effectively in
aggressive environments and extreme temperatures
and meet international standards such as:

> ATEX > KOSHA

> TÜV > DVGW

Refining
> TR-CU > FM AND UL

> INMETRO > NEMA

> CSA

Petrochemical

Approved

At the heart of our offering to the Energy sector are

stainless-steel solenoid valves and air preparation
equipment (filters, regulators and filter-regulators),
pneumatic and hydraulic pressure switches, I/P and
E/P convertors, 2/2 way and 3/2 way process valves
and Redundant Valve Manifold (RVM) systems.
Chemical
Our work with leading national and international oil and
gas companies and global suppliers means that we talk
our customers’ language, and can bring specialised
experience about legislation, standards and specifications.

Power Generation
 Solutions for Power Generation 05

Our Reach
Global manufacturing
and support

> We have a global network of technical centres close to our

key markets where skilled and experienced design and
development engineers produce custom-built solutions to
give our customers competitive advantage.
sales and manufacturing facilitiles
in 75 countries give us the globa ilities
> With established manufacturing facilities globally we have the
manufacturing and support capabilities to be able to cope
with the most demanding international projects.
reach, understanding and capab
> With an established sales and service network in 75 that customers look for
countries,we have the reach and capability to ensure
continuity of supply and local support where it is needed.

Europe
North UK
America Fradley, Bristol,
Leeds, Poole &
CZECH REPUBLIC
Brno
Gateshead
USA
Seattle
Asia
GERMANY
USA Alpen
Littleton

CHINA
MEXICO Shanghai
Queretaro

Africa INDIA
Noida
South
America Australia

Sales & Service in 75 countries

Sales, manufacturing and technical centres
Sales locations
Manufacturing locations
06 Solutions for Power Generation

Industrial turbines &

reciprocating engines
The gas and steam IMI Precision Engineering has been
helping our customers to reduce the life
turbine market whether it cost of critical gas and steam turbine
is onshore or offshore is systems whilst improving plant reliability
increasingly dynamic. Turbine for over 70 years. We work closely with
everyone from manufacturers to end
manufacturers and end users which enable us to provide market
users have to balance safety leading products that are specific to our
customer’s individual requirements.
with reliability as well as
legislation with performance. > Deliver market leading fluid
control products
Many factors can unsettle
> Global network of energy team.
this harmonized equilibrium Local support wherever your
including the reliability project or installation is.
and performance of key > Market leading performance
components on the turbines for safety and reliability
or auxiliary control systems. > Valves specifically designed for reliability
and longevity in harsh conditions
> Reduced overall maintenance costs
 Solutions for Power Generation 07

Fuel control unit

(block & bleed )
Air intake self
cleaning system
(Valves)

Lubrication

Washing
unit

Purging
Primary fuel
system
isolation valve
circuit
08 Solutions for Power Generation

Key power
generation
applications
and solutions
 Solutions for Power Generation 09

Robust design

High performance solenoid valves

Our IMI Maxseal range of solenoid valves were originally
designed for the oil and gas industry and are typically specified
for service in the most demanding environments on the
planet. Given the robust nature of the design it thrived in
such applications and is now the market leader in safety and
reliability with SIL approval and globally certified. IMI Maxseal
is the perfect choice for industrial applications both on and
offshore where safety and reliability is critical. IMI Maxseal
solenoid valves have over 50 years history in the turbine
market whether it being the primary fuel isolation and vent
valves for both liquid and gas fuel on gas/dual fuel turbines,
trip valves on steam turbines, controlling the purging and
washing systems or other supporting auxiliary control.

High flow
characteristics

Solenoid valves – process control

Our unique internally piloted valves utilise the flow of the main
valve stage to pilot the solenoid valve, thus having all the size
and weight benefits of a piloted valve without the need for
separate pneumatic pilot supply or vent lines.
The valve uses a full size orifice pilot which prevents the
potential to block the pilot stage – a dangerous failure mode
on most internally piloted valves. It is also fully back pressure
tight and has a proof of closure switch located on the main
valve stage.
With high pressure - high flow characteristics, sizes up to 4”,
a typical closing time of <100ms and the ability to withstand
temperatures from arctic to above fuel preheat temperatures
with one device, these valves are perfect for applications like
fuel isolation on both aeroderivative and frame type turbines.
10 Solutions for Power Generation

Simple
installation

Direct acting SOVs

As with the internally piloted valve range, the SOV’s direct
acting design means there is no requirement for supplying
or venting external pilot lines. The valves are simply installed
in the process line and connected to the control system for
both ease of installation and a reduced installation cost.
Unlike the internally piloted valves, these valves do not require
any force assist from the media, therefore can operate under
no flow, zero pressure conditions giving you the equivalent
of an actuated ball valve package without any air/vent
lines and as an incumbent unit from one manufacturer
The durability of these valves means that they can be SIL 3 rating
used on a wide variety of media including sweet & sour
gas, liquid fuels, lubricants and oil. They are used in
many direct process line applications as well as pilot
valves on larger gas and steam turbine applications.
> SIL 3 rated
> Up to 4” connections
> 316SS as standard - Wide variety of material options available
> Operating options available (i.e. internal/external switches,
position indicators, tamperproof overrides etc.)
> High temperature media options
> Certified to ATEX Exd IIC T6-T4
> High spring force = High safety factors (10x) – market leading
> High flow, high pressure options
> Fast acting
> Reduced power coil option
We understands that one project requirement can be different
from the next, so we have the option to manifold all of our
valves. If you are looking for a redundant voting system,
or require single or double block and bleed (isolation and
vent) functionality, we have the system integration expertise
to offer a complete control package to your requirements. Manifold options
Through our packaging experience, we can also make a
unit to fit a required space/size with the ability to access
the valves reducing time during maintenance periods.
 Solutions for Power Generation 11

Instrument changeover solenoid valves

Our IMI Herion, IMI Buschjost and IMI Maxseal range of
solenoid valves have been used in the industry for many
years. These solenoid valves are used anywhere from purging
systems to the main pilot valves for fuel systems on turbines,
or automatic lubrication control on reciprocating engines.
We have worked with Power Generation companies the
world over to increase our customers reliability and safety.

Our high integrity valves have: Force friction ratio

> A Field proven track record The critical safety element of a solenoid valve is its
Force Friction Ratio (FFR). The FFR is a measure of the
> 10 year service interval (6 years to maintain SIL 3)
relationship between the force presented by the spring
> Wide range of flow and function options return mechanism and the frictional resistance within
the valve. In basic terms, the higher the FFR, the more
> Stainless Steel, Aluminium or Brass construction options
likely the valve is to operate when demanded, as the
> Industry leading Force Friction Ratio (FFR) spring will have a force in excess of the friction.
> Cable terminations inside coil - Poppet design solenoid valves generate much lower friction
No additional Ex terminations required than spool design solenoid valves, and this advantage is greatly
enhanced at extreme temperatures – both hot and cold.
> Rated for 100% duty
IMI Maxseal and IMI Herion solenoid valves offer
> Wide media and ambient temperature ranges
an FFR of 10 - the highest in the industry.
(leave figures out)
> International approvals
> SIL approved

stainless
steel

ICO4
solenoid
12 Solutions for Power Generation

Air intake system: self cleaning filters

Our self cleaning filtration range was developed for
regions where gas turbines are subjected to frequent
dust, sand, chemical or environments which can reduce
the efficiency, performance and reduce the time between
maintenance intervals of the turbine or filters.
IMI Precision Engineering have developed a unique pulse valve
which are supplied into self-cleaning systems. We can supply
either individual valves or tank systems with the valves pre
integrated, along with controllers and differential pressure
controllers. We also offer self cleaning pneumatic
accessories and filters/regulators to support the system.
> Integrated pulse valves in the tank Filter cleaning system

> Controllers
> Differential pressure controls
> Pneumatic accessories - Filters and Regulators

Inlet
Filtration Solenoid pilot operated
System

Silencer Gas Turbine

Pneumatic controller
 Solutions for Power Generation 13

Controllers Remote pilot operated

Differential pressure
Measuring transducer

Solenoid pilot operated

Filter cleaning system

Remote pilot operated Differential Valve for tank mounting

pressure controller
14 Solutions for Power Generation

Pulse valve
technology

One – Piece diaphragm

TPE material provides:
> Longer life time 2,5 times more than rubber version Longer
> Higher stroke = higher flow life time
> Integrated spring function
> Integrated silencer reduces noise about 20% than external
> Solenoid Valves and pilot valves in boxes are “dry core”
valves – this eliminates the risk of the main pilot valve
freezing in sub zero applications which is a common issue
with "wet core" valves

One-piece
diaphragm
 Solutions for Power Generation 15

Cooling circuit valves 2/2 washing cycle valves

Our Ex range of IMI Buschjost solenoid valves are used Valve for robust industry solutions - Ideal as
as control valves in cooling circuits on turbines and isolation valves for washing cycle duty.
generators of various sizes and power output ranges. They
> Ex rated coil
are available to be used with air, water, hydrogen or seal
oil type applications covering a wide range of media and > High flow rate
ambient temperatures. These valves are designed to be
> Suitable under vacuum conditions
back pressure tight to typical reverse flow conditions seen in
cooling systems. These valves have many options available as > Valve operates without pressure differential
standard including position indicators, switches and manual
> From ½” – 2” flanged and threaded ports
overrides depending on individual customer requirements.

High
flow rate
Ex range
solenoid
valves
16 Solutions for Power Generation

Redundant Valve
Manifold (RVM)
systems
Redundant systems are The issues with existing solutions The RVM system solves these problems.
Combining safety and availability in a
required to increase uptime > Current systems are hard piped
single convenient package. Our RVM
systems, components bolted together
by ensuring the process on a back plate, or tie-rodded together
system offers simpler installation,
continues to run in the helps eliminate unplanned shutdowns
> The complete systems and is available in either aluminium or
event of a valve failure; are not SIL certified stainless steel to suit both upstream
or to increase safety by > Difficult to service and maintain
and downstream applications.
ensuring the process can > System replaces components,
> Incorrect configuration can
be shut down in the event be dangerous
panels and pipe work

of a failure - or both. > Number of potential leaks

> Available in aluminium or
stainless steel construction
> No failure indication for
> Utilising industry proven
valves and outputs
products and technology

Semi-modular

Modular design
with bypass
 Solutions for Power Generation 17

> Three design options - > Valve position sensors

Compact, semi-modular Provide electrical feedback on
and modular the valve position status
Reduces potential leak paths and
installation time. Mounted at the point > Exhaust guards
of use next to the process valve. Prevent moisture and particle
ingress from the environment
> Compact design
Space saving with the > Cable terminations inside coil
smallest overall footprint No additional Ex terminations required

> Semi-modular design > SIL certified components enable

Visual pressure indicators complete SIL certified RVM systems
showing valve position status Ensures safe operation

> Modular design > International approvals

Added benefit of a bypass function
> Diversity option
enabling valve removal online,
Unique combination of valve
plus visual pressure indicators
technology from IMI Herion and
showing valve position status
IMI Maxseal on the same manifold

Compact
Diversity design
18 Solutions for Power Generation

Redundant Valve
Manifold (RVM)
functionality options
The RVM System is available in three functionality options,
the selection of which will be dependent on the Safety
Instrumented Function (SIF) that it is to be used within.
1oo2, 2oo2 double channel and uniquely 2oo3
triple channel systems are available.

> Compact 1oo2 > Semi modular 1oo2 > Modular 1oo2 > 1
 oo2 “Safety”
(with bypass) Double channel
redundant system
Redundancy for the process
valve closure.
Any one out of two solenoid
valves needs to de-energise
to ensure safety.

> Compact 2oo2 > Semi modular 2oo2 > Modular 2oo2 > 2oo2 “Availability”
(with bypass) Double channel
redundant system
Redundancy for the process
valve to remain open.
Any one out of two solenoid
valves needs to remain
energised to ensure
availability.

> Compact 2oo3 > Semi modular 2oo3 > Modular 2oo3 > 2oo3 “Safety and Availability”
(with bypass) Triple channel
redundant system
Any two channels out of
three need to operate to
provide safety (process
valve closure) and availability
(process valve remain open).
The RVM system combines the
strength of “1oo2” and “2oo2”
thus increasing both safety
and availability functions.
 Solutions for Power Generation 19

Hydraulic
RVM systems
Hydraulic 2oo3 fail safe
trip system for gas and
steam turbines
The IMI Herion Hydraulic 2oo3 system
provides safety and availability for
main shut off emergency process
valves with hydraulic actuators.
Using three identical solenoid valves to
create a flexible 2oo3 voting logic for
unequalled failure tolerance, the system
uses redundant cartridges which allow
high flow rate and a quick response time.

> Available for low and high > SIL 3 approval

operational pressure 5 – 320 bar
> IP 65
> Different sizes provide high flow
> Certification to ATEX, GOST
availability 200 – 4000 l/min
> Redundant cartridges
> Cartridges sizes DN 16; 25;
32; 40; 50 AND 63 > Partial Stroke Testing Option
> Fast reaction time > Maintaining Safety 2oo3 during
operation (redundant 2oo3 system)
> Safety Control – direct monitoring
of solenoid valves position closed > Prepared outlets for
open (proximity switches) pressure transducers

Hydraulic
2oo3 system
20 Solutions for Power Generation

Natural gas
solutions
Our market-leading product ranges offer an > Helping to increase energy efficiency
extensive range of high quality components > Improving the environment by simplifying the delivery
of CNG into vehicles and eliminating wastage
and complete system solutions to meet the
specific requirements of the Compressed > Improving safety

Natural Gas industry. > Solutions for CNG compressors and dispensers

Manifold solutions
With 75 years’ experience manufacturing sophisticated solenoid Three station manifolds
valves, we are confident in the reliability and performance of
Solenoid valve manifold with integrated check valves which can
our products, and we are now providing value added solutions
be used in priority panels and even in a bus or truck dispenser.
by incorporating our proven valve technology into customized
valve manifolds to replace ball valves, rotatory actuators and
Six station manifolds
pilot solenoids in priority panels and dispensers.
Solenoid valve manifold with integrated check valves which can
be used in a two sided small vehicle dispenser.

integrated
check valves
option; 3 x 40µm
6 station integrated filter
3 x 1/4 ports
for pressure manifold
transmitters

ND 8mm
3 station
manifold
 Solutions for Power Generation 21

High pressure valves

With pressures up to 350 bar, we understand the need for
valves to be safe, have very high levels of pressure integrity
and to be reliable.
> Body Material: Aluminium, Brass or Stainless Steel
> PED: Compliant
> Mounting position: Horizontal or Vertical
> Interchangeable solenoids without the need
for depressurisation
> Temperature range from -40°C to +70°C
> ATEX, IP65 and 97/23/EG approved
Spring loaded
regulators and
Back pressure
maintaining valves

Pressure control solutions

Proven solutions for high pressure gas control on the outlet
from the compressor and in downstream pressure reduction
applications, such as in the dispenser.
> Pressure range: up to 450 bar
> Body materials: Aluminium bronze
Dome loaded
> Brass or Stainless Steel regulators and
back pressure
maintaining valves
 22 Solutions for Power Generation

Gas & air preparation

solutions
IMI Precision Engineering Instrument Gas &
Air preparation solutions protect sensitive
and expensive instrumentation and controls
from water, oil or particle contamination.
Proper Gas & Air preparation can reduce or eliminate
the number of unplanned shutdowns due to:
> Corrosion from condensates
> Clogging from particulates
> Seal softening and leakage due to attack from aggressive oils

Filtration systems Filter regulators

3-Stage filtration systems IMI Norgren and IMI Maxseal 316 stainless steel filter
regulators are specially suited for offshore applications
> Stage 1 – 25µ particles, 70% water
> 316 Stainless Steel for corrosive environments
> Stage 2 – 5µ particles, 90% water
> Suitable for instrument air or hydrocarbon gas
> Stage 3 – 0.01ppm oil, submicron particles, trace moisture

IFR B38
Long service
intervals

Dependable High
performance flow

Optional
precision
control
High
flow

Robust
construction Efficient
water $
Suitable for extreme s particle
Manual or temperature environment removal
automatic and sour gas
drains
 Solutions for Power Generation 23

High pressure
regulation
Proven solutions for Spring loaded regulators Dome loaded regulators
high pressure liquid > H
 eavy duty quick adjustment regulators > P
 ilot operated, balanced valve regulators
& gas regulation. from 1/4 to 1 porting in 3/8 to 2 porting
> L
 iquid & Gas operating temperatures: > L
 iquid & Gas operating temperatures:
-40°C to +150°C (-40°F to +300°F) -40°C to +150°C (-40°F to +300°F)
> J 44 – 1/2 port, steam applications to > U
 p to 420 bar (6000 psi) inlet pressure
300°C (570°F) and 300 bar outlet (4350 psi)
> P
 iston, diaphragm, differential, back > Series K16, K50
pressure, balanced and unbalanced
configurations
> J 50 – 3/8 port, 750 bar (10,875 psi) inlet,
outlet control to 550 bar (7975 psi)
> J 55 – 1/2 port 420 bar inlet (6090 psi)
inlet, outlet control to 103 bar (1490 psi)

Wide
temperature
range
Easy
adjustment

K16

K50 J55

J50
J44
24 Solutions for Power Generation

Additional
80400
products
316L Stainless Steel Our portfolio includes standard
construction products and custom solutions suitable
for the global energy industry.

Air piloted valves (APV’S)

APV’s are required:
-60 to +80°C
> For applications with large, heavy duty actuators
> To open or close the Armature/Valve
(Globe/Gate/Butterfly….)
SIL approved
> To fill or exhaust the Actuator when required
e.g. Emergency Shut Down
 Solutions for Power Generation 25

140 FAILSAFE 100X

Proportional expertise
Our pressure and flow control proportional valves incorporate
advanced spool and balanced-poppet technologies.
Unlike competitor products which rely upon miniature
snap-action seats, our valves provide true stepless
pressure or flow control. The result is smooth response,
low noise, and a long trouble free cycle life. On-board
digital electronics assure maximum flexibility and ease of
tuning for specific application conditions. Self diagnostics,
optional digital displays, and a variety of Fieldbus interfaces Closed loop Open loop
are all benefits of the microprocessor-based design.

Type 422 - Fail freeze ATEX IS valve

The Type 422 IS is the only ATEX certified fail freeze
proportional valve on the market today.
Fail Freeze operation means that if the signal to the valve fails
suddenly, the unit will maintain its last output pressure, ensuring
that critical systems do not shutoff or close on plant in the event
of a power failure.
IS certification provides system designers, and users, the
flexibility to safely use potentially flammable compressed
process gases to pilot their applications, providing the
opportunity to remove the need, and cost, of installing a
pneumatic system.
One area of the Energy Sector that makes full use of these
combined unique attributes is Gas Distribution. In reduction
stations the natural gas is piped out of the line and into the Type
422 IS which then regulates it precisely positioning the actuator
and the pipeline valve, the fail freeze capability ensures the gas
stays on, even if power is lost locally.
> Operating Temp: -10°C to +70°C
> Linearity: <0.5% of span
> Pressure range: 0.2 – 1.0 Bar
> Response: <6 seconds
> Power Consumption: <0.25W
> Ingress protection: IP65
Electro- 18D 33D
mechanical

Pressure switches
Pressure sensor technology is critical when pressure monitoring
for higher plant security or pressure control for higher
functionality are needed in an application.

Electronic
26 Solutions for Power Generation

Instrumentation control valves

The first Ashford valves entered service in 1956 and today
the product range extends from small bore instrument needle
valves to globe valves and manifolds, both gland packed
and bellows sealed. Products are in service throughout
industry including oil production and refining, gas production
and petrochemicals. In power generation these are found
extensively in both fossil fuel and nuclear fuelled generating
plants. The product range covers single needle valves (including
Outside Screw & Yoke variants), 2-valve isolating and calibrating
manifolds and 3 and 5-valve manifolds (remote and direct
mounted). Standard products are suitable for use up to 6000psi
(414 bar) and are available with a range of optional features
including locking devices, panel mounting, T-bar or handwheel
operation, stub pipes and a wide range of connection types.

Instrument needle
valves, globe valves
and manifolds
 Solutions for Power Generation 27

Nuclear class valves & regulators

Bellows sealed globe valves Bellows sealed needle valves and manifolds
> Seat material to preferred specification > Seat material to preferred specification
> Inconel 625, bellows
® > Inconel® 625, bellows
> Stainless steel, carbon steel > Stainless steel
> Oblique Pattern > Threaded or welded connections
> Threaded, welded or flanged connections > Compact, lightweight and robust

Nuclear class
valves & regulators
IMI Precision Engineering
operates four global centres
of technical excellence and
a sales and service network
in 75 countries, as well as
manufacturing capability in the
USA, Germany, China, UK,
Switzerland, Czech Republic,
Mexico and Brazil.

For information on all

IMI Precision Engineering
companies visit
www.imi-precision.com

Supported by
distributors worldwide

Norgren, Buschjost, FAS,

Herion and Maxseal are
registered trademarks
©Norgren Limited 2015.
Due to our policy of continuous
development, IMI Precision
Engineering reserve the right to
change specifications without
prior notice.

z7919BR en/03/15

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