FS1 Valves

Solenoid Powered to Close / Manual Reset Butterfly Valves

Part of the F Series of easily installed, compact, air intake
valves for diesel engine emergency shut down.

FKII Speedswitch Kits

available for a complete
overspeed installation
About Wyndham Page Ltd
Based in the UK Wyndham Page specialise in the design and manufacture of safety
equipment for diesel engines.
Our product range of Air Intake Shutdown Valves includes our E Series Automatic
Valves and our F Series Butterfly Valves with solenoid, pneumatic or manual
actuation options. We offer Speedswitch kits for the F Series valves, a range of G
Series Mechanical Engine Safety Products and a range of Spark Arresters designed
to prevent the emission of high energy sparks from diesel exhaust systems.
Wyndham Page is headed by Freddy Page-Roberts who brings over 20 years’
experience in the diesel safety industry and was previously managing director of
Chalwyn Ltd.
All members of the senior management team have considerable experience
in organisations specialising in the design and manufacture of hazardous area
equipment for diesel engines.

Quality Assurance
Wyndham Page Valves are manufactured and tested under our EN ISO 9001: 2015
quality management system.
Wyndham Page Ltd are certified to supply Ex equipment under Quality Assurance
Notification CML ATEXQ11003 in the UK, CML ATEXQ13649 in the EU and IECEx
Quality Assurance Report GB/CML/QAR17.0023/01.
• Ex Equipment supplied with an UK Declaration/Assertation of Conformity is CA
marked and meets the provision of the UK directive SI 2016No. 1107
• Ex Equipment supplied with an EU Declaration/Assertation of Conformity is CE
marked and meets the provision of the ATEX directive 2014/34/EU
• Other Equipment supplied with an UK Declaration/Assertation of Conformity or
an EU Declaration/Assertation of Conformity is CA / CE marked and meets the
provision of the directives specified in the Declaration of conformity.

2
FS1 Valves: Application
The FS1 version of the Wyndham Page F Series of engine air intake closure valves is
designed to provide an emergency means for rapid shutdown of a diesel engine when
triggered by a 12 or 24 Volt DC signal. This signal may be generated automatically
by engine overspeed or any other selected fault condition or via a manually operated
electrical engine stop button. Optionally for additional safety the valve can also be
supplied with a mechanical emergency engine stop button either directly mounted on
the valve or remotely mounted for operation via a mechanical cable.
Once the FS1 valve has operated to stop the engine, a restart is only possible after
manually resetting the valve to the run position.
The low intake airflow restriction through the open valve makes it generally
compatible with the requirements of low emission diesel engines.
Corrosion resistant materials are used where applicable in the construction of the
valve. This lightweight and compact valve design together with the availability of
factory fitted hose adaptors selected from a wide range of optional sizes assists in
easy installation.
The valve may be fitted to either turbocharged or naturally aspirated engines. In the
case of turbocharged engines temperature limitations may restrict the position in
which the valve may be installed in the intake system.
Note: This handbook is not applicable to the FS1-178 & 203 sizes of this valve.
Please refer to the separate handbook for these valves.

Speedswitch Kits
Wyndham Page supply Speedswitch kits for incorporation into the
emergency shutdown control circuit of the FS1 valve. Details can be found in our
“FKII Speedswitch Kits - FS1 Valve” handbook available for download on
our website. Please contact Wyndham Page or your Wyndham Page supplier
for additional details.
Note. The FS1 valve must have a M3 microswitch configuration to use with our kit.

3
Description and Main Dimensions
The FS1 butterfly valve is a latched open type. Either operation of the manual engine
shutdown button [where fitted] or applying a 12 or 24 volt DC signal is required to trip
the valve to the closed [engine stop] position. Following valve closure the manual reset
lever on the valve is used to reset to the latched open position. Optionally the valve can
be supplied with a cable and lever arrangement to permit manual reset from a position
remote from the engine.
In standard form the FS1 valve is available complete with integrated hose adaptors as
selected by the Customer from a range of standard sizes – see diagram below and
data on pages 5 and 6. Where a requirement exists for a non-standard adaptor size or
other alternative form of pipe connection such as a flanged joint please pass details of
your requirement to Wyndham Page or your Wyndham Page supplier for investigation.
The valve is supplied fitted as standard with an internal microswitch to indicate
the open/closed status of the valve. For details on the microswitch options see page 8.
The valve has a metal to metal seal when closed. It is designed for low closing friction
and long life of the sealing surfaces. The latching / release mechanism is configured
to withstand high shock loads without malfunction.
The electrical enclosure is to IP66.
The diagram below and the diagrams and data on pages 5 to 9 cover the main
features and basic dimensions of the FS1 range including selection of options
and order coding.

4
 METRIC TABLE DIMENSIONS (MM)

WEIGHT

ORDER
CODE
H TO SUIT

KG
HOSE BORE
MODEL BORE A B C D E
38 1.08 038
44 1.08 044
51 1.08 051
57 81 136 50 20
57 1.07 057
64 1.08 064
70 1.11 0.70
70 65 91 146 28 25 0.97 070S
76 1.05 076
83 1.14 083
71 99 154 28 25
89 1.21 089
95 1.28 095
FS1 102 1.38 102
108 1.46 108
95 125 180 35 25
114 1.55 114
121 1.66 121
127 1.84 127
133 1.95 133
120 154 209 42 25
140 2.07 140
146 2.19 146
152 2.64 152
159 2.79 159
145 185 241 49 25
165 2.92 165
171 3.05 171

AIRFLOW

AIRFLOW

5
 IMPERIAL TABLE DIMENSIONS (INCHES)

WEIGHT

ORDER
CODE
H TO SUIT

LB
HOSE BORE
MODEL BORE A B C D E
1.50 2.38 038
1.73 2.38 044
2.01 2.38 051
2.2 3.18 5.33 1.97 0.79
2.24 2.36 057
2.52 2.38 064
2.76 2.45 070
2.76 2.56 3.58 5.75 1.10 0.98 2.14 070S
2.99 2.32 076
3.27 2.51 083
2.80 3.90 6.06 1.10 0.98
3.50 2.67 089
3.74 2.82 095
FS1 4.02 3.04 102
4.25 3.22 108
3.74 4.92 7.09 1.38 0.98
4.49 3.42 114
4.76 3.66 121
5.00 4.06 127
5.24 4.30 133
4.72 6.06 8.23 1.65 0.98
5.51 4.56 140
5.75 4.83 146
5.98 5.82 152
6.26 6.15 159
5.71 7.28 9.49 1.93 0.98
6.50 6.44 165
6.73 6.73 171

Valve Selection
To enable Wyndham Page to select the most suitable version of the FS1 valve for the
Customers application the following data is required:
[1]. Bore size of the intake hose into which the intake valve is to be fitted - refer to section
headed “Installation [mechanical]”.
[2]. Whether a 12 or 24 volt DC shutdown signal is to be used.
[3]. The microswitch operating mode – see schematics on page 8.
The following additional options are available
[4]. A remote manual reset (see page 9) select suitable cable length - see range on page 7.
[5]. A mechanical engine stop button (see page 9) select cable length if applicable
- see range on page 7.

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Order Coding
FS1 - XXX - XX - MX - RXX - EXX - S00

Special features code (refer to sales)

only included in code if required
Manual stop option: E or EXX for cable length
(see table below)
Reset cable option: Length RXX (see table below)
Microswitch option: M2 or M3
Voltage: 12 or 24 VDc
Adaptor size (order code in table)

STANDARD CABLE LENGTHS Special Features:

CABLE XX CODE LENGTH (M) By arrangement with Wyndham Page.
05 0.5
10 1.0
15 1.5
20 2.0
25 2.5
30 3.0

7
FS1 - M2 Valve: FS1 VALVE: 12 OR 24 VDc WITH M2 MICROSWITCH

Internal wiring schematic

Microswitch option M2
Suitable for customers controlling
the valve via their own electrical
system.
Provides valve state
indication if connected:
Brown +ve
Blue -ve
Black - open/closed state
Not applicable to the FS1-178/203

FS1 - M3 Valve: FS1 VALVE: 12 OR 24 VDc WITH M3 MICROSWITCH

Internal wiring schematic

Microswitch option M3
Designed for use with the
Wyndham Page FKII-S1 range
of Speedswitch kits or for
customers controlling the valve
via their own electrical system.
Provides protection for the
solenoid and valve state
indication.
Brown +ve
Blue -ve
Black - open/closed state
Not applicable to the FS1-178/203

8
Additional Options:

[4in]
[4in]
[4in]

100mm
[4in]
[4in]
100mm
100mm
100mm[4in]
100mm
100mm

RESET CABLE OPTION: ORDER CODE RXX

RESETRESET
CABLECABLE OPTION:
OPTION: ORDERORDER
CODE CODE
RXX RXX
RESET CABLE
RESET OPTION:
CABLE ORDER
OPTION: CODE
ORDER RXXRXX
CODE
RESET CABLE OPTION: ORDER CODE RXX

PUSH BUTTON MANUAL STOP OPTION: ORDER CODE E

PUSH PUSH BUTTON
BUTTON MANUAL
MANUAL STOP STOP OPTION:
OPTION: ORDERORDER
CODE CODE
E E
PUSH
PUSH BUTTON
BUTTON MANUAL
MANUAL STOP
STOP OPTION:
OPTION: ORDER
ORDER CODE
CODE E E
PUSH BUTTON MANUAL STOP OPTION: ORDER CODE E

REMOTE PUSH BUTTON MANUAL STOP OPTION: ORDER CODE EXX

REMOTE PUSH BUTTON MANUAL STOP OPTION: ORDER CODE
EXXEXXEXX
REMOTE PUSH
REMOTE
REMOTE
REMOTE
BUTTON
PUSH
PUSH
PUSH
MANUAL
BUTTON
BUTTON
BUTTON
STOP
MANUAL
MANUAL
MANUAL
OPTION:
STOP
STOP
STOP
ORDER
OPTION:
OPTION:
OPTION:
CODE
ORDER
ORDER
ORDER
CODE
CODE
CODE EXXEXX 9
 Valve Installation [mechanical]
Select a position for the valve which meets the requirements below. The valve may
be fitted in any attitude from horizontal to vertical but not in a position where it is
subjected to temperatures, internal or external, outside of the range -40˚C to +120˚C.
When planning and checking installation always ensure that:
a. There is safe access to operate the Reset Lever & E stop button (if fitted) and a
suitable run for the electrical cables and manual cables (if fitted).
b. The direction of airflow is in compliance with the arrow marked on the body of
the valve.
c. An Air Filter Element must always be fitted in the engine air intake system
upstream of the Valve.
d. Valve location in the Air Intake System (refer to schematics below):

 the  be located where

 Yes  No !! !

In all cases 
Valve must ! ambient and intake air
both
temperature does not exceed 120°C.
• Normally Aspirated Engines (no turbocharger): fit the valve between the engine
and the air filter (see schematic below).

F VALVE
F VALVE
AIR FILTER
AIR FILTER
F VALVE FAIR FILTER
VALVE AIR FILTER
ENGINE
ENGINE

 
ENGINE ENGINE

• Turbocharged Engines: fit the valve upstream [air filter side] of the turbocharger.
Do not fit the valve between turbocharger and engine (see schematic below).


 
F VALVE
F VALVE
F VALVE
F VALVE F VALVE F VALVE

 
F VALVE F VALVE
TURBO

TURBO
TURBO

TURBO

ENGINE
ENGINE
ENGINE ENGINE
AIR FILTER
AIR FILTER
AIR FILTERAIR FILTER

10
(!) (!)
(!) (!)
 (!)
• Turbocharged Engines with Intercooler: fit the valve upstream (air filter side) of
the turbocharger or downstream of the intercooler. Do not fit the valve between
turbocharger and intercooler (see schematic below).
INTERCOOLER
AIR FILTER

TURBO
F VALVE 
F VALVE
ENGINE
 F VALVE


e. In all cases where an Intake Flametrap is also fitted, the valve must be installed
upstream of the flametrap.
f. The hose into which the valve is fitted should be adequate to fully support the
valve whilst not permitting excessive vibration of the valve. For the heavier valves
in the range a support bracket for the valve may be necessary. Generally ensure
that there is sufficient flexibility in the finalised intake system installation to allow
for the relative movement between the system components over the full range of
engine operating conditions thereby avoiding excessive mechanical stresses.
g. Any engine Crankcase Breather arrangement venting directly into the intake
ports or into the air intake system downstream of the Wyndham Page valve must
be sealed and replaced by an external breather system connected to the intake
system upstream of the valve or [if permitted at the operating site] vented to
atmosphere.
h. When installing valves fitted with the manual cable RXX option ensure that the
bend radius of the Cable does not restrict the mechanism from pulling the T
Handle back into the run position. If it is found that the T Handle is not being
pulled fully in then a straighter run for the reset cable must be used.
Important Note. Retain the standard fuel shutdown stop fitted to the engine. The
Wyndham Page FS1 air intake valve is designed for emergency stop only.

11
Valve Installation [electrical]
The wiring diagrams on page 8 show the connections for the valve solenoid
and microswitch.
The electrical data for the solenoid and microswitch is tabulated on page 13.
It is recommended that either a manually operated electrical engine stop button
or a remotely operated mechanical engine stop button is always incorporated.
The solenoid power supply cable must be adequately secured along its length
to avoid excessive mechanical stress at the connection to the solenoid or any
other physical damage under all normal operating conditions and during
equipment servicing.
Important notes.

1. Valves fitted with the M2 microswitch: The electrical system must include
means to restrict the maximum time the closure signal may be applied to
the solenoid to within the limits stated on page 13. This restriction must also
be applied where a manually operated electrical engine stop button is also
incorporated in the electrical shutdown circuit.

2. Valves fitted with the M3 microswitch: The microswitch will disconnect

the stop signal to the solenoid as soon as the valve closes.
DO NOT RESET THE VALVE TO THE OPEN POSITION UNTIL THE STOP
SIGNAL HAS BEEN DE-ENERGISED. RE-OPENING THE VALVE OR HOLDING
THE VALVE OPEN WITH THE STOP SIGNAL APPLIED WILL POTENTIALLY
DAMAGE THE SOLENOID.

3. It is recommended that for additional safety when a manually operated

electrical engine stop button is incorporated it should be directly supplied by
the required voltage from source and not via the shutdown control circuit.

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General and Electrical Specification
GENERAL DESCRIPTION:
A slim butterfly valve designed for emergency shutoff of the engine air intake.
Mechanically latched open, energise to close, manual reset by rotation of reset knob.
GENERAL SPECIFICATION:
Temperature: Max ambient: 120°C
Max intake air temp: 120°C
Construction: Body and disk: Hard anodized aluminium
Other main components: Stainless steel, aluminium
Hose adaptors: Aluminium
ELECTRICAL SPECIFICATION:
Solenoid energise to close operation
12 or 24 Volt DC option specified when ordering
Solenoid rating: 12 Volt DC, 7.5A, 90W
24 Volt DC, 3.75A, 90W
10% Duty Cycle
Max single pulse @20°C: 8 seconds
Max on time in 1 minute @20°C: 6 seconds
Recommended engine controller setting: 1 second
MICROSWITCH:
S.P.S.T - 24V, 10A Max
Code M2: Switch closed when valve in open position
Code M3: Refer to schematic on page 8
CABLE:
SIHF silicone insulated multicore cable: Standard length 3m

13
Operation
The valve closure disc is sprung towards the engine stop [closed] position. It is latched in
the engine run [open] position by rotating the reset latch as indicated on the valve body,
or, where a remote manual reset is fitted, by pulling the reset ‘T’ handle. During engine
operation the valve remains open until the 12 or 24 volt DC shutdown signal is applied or
the manual emergency stop button is operated. This releases the valve disc from the run
position to the stop position thereby shutting down the engine.
Note. Unless released to the closed position by an electrical signal or the manual
emergency stop button the valve disc will continue to remain in the latched open state and
therefore following a normal engine stop by fuel shut down it will not require reset.
The valves internal microswitch permits an indication of the valves open / closed status.

Maintenance
The following maintenance schedule should be undertaken. Subject to experience of
local operating conditions the frequency of the maintenance schedule may be varied.
Carry out the proposed maintenance work when the equipment is in a safe area and
record details of the work carried out. Rectify any problems identified before returning
the diesel powered equipment back into service.
FOLLOWING INITIAL INSTALLATION AND THEREAFTER AT WEEKLY INTERVALS:
[1]. Check all intake pipework between the FS1 valve and engine intake manifold to ensure
all pipe fittings and any support brackets are properly fitted and secure and that the
engine intake is leak free and shows no sign of significant deterioration or damage.
[2]. Where the valve has been fitted with a Reset Cable RXX option inspect and if
required clean off any contamination from the reset lever, reset mechanism slide and
T Handle shaft and spray with a suitable light cleaner/lubricant. Check that the Reset
mechanism pulls the T Handle fully back into the run position.
[3]. Start engine. Carry out a shut down using the stop signal from the shut down control
system. Check that the valve snaps shut and brings the engine to a stop within a few
seconds.
SIX MONTHLY:
Remove the FS1 valve. Wipe clean as necessary and visually inspect for damage or
excessive wear. Bench test valve function. Refit and complete the “Weekly” maintenance
as listed above.

14
Notes:

15
Unit 1c Chalwyn Industrial Estate, Parkstone, Poole,
Dorset BH12 4PE United Kingdom

Tel: +44 (0)1202 734 656

Email: sales@wyndhampage.com
16
www.wyndhampage.com FS1 Valve Handbook-V5