JP Fluid Control ST-SB Series User manual

JP FLUID CONTROL
MANUAL-ST-SB-EN v1.2 www.jpfluidcontrol.com 1
ST-SB SERIES
SOLENOID VALVES
2/2-WAY
SEMI-DIRECT OPERATED
NORMALLY OPEN
Solenoid Valve ST-SB-series
The ST-SB is a semi-direct operated 2/2-way solenoid valve.
The valve is normally open. The body material can be brass
or stainless steel with a NBR, EPDM or FKM seal. The valves
have an orifice of 9mm (stainless steel) or 10.5mm (brass)
and can be used from a zero pressure difference. The ST-SB
solenoid valves are compatible with all coils from the CS2-
series.
Example of product code
Dimensions
Series
Standard (ST)
Function
2/2 way
Operation
Semi-direct (S)
Position
Normally open (B)
Body Material
Brass (B) / SS 316 (S)
Seal &
Media Temperature
NBR (N)
-10..80°C
EPDM (E)
-30..130°C
FKM (F)
-10..120°C
Thread
BSPP / NPT (N)
Ambient Temperature
Max 50°C
Min. Press. Difference
0 bar
Max. Pressure
16/10 bar (AC/DC)
Coil series
CS2
Voltage
380V AC 50Hz (380AC)
230V AC 50/60Hz (230AC)
120V AC 50Hz (120AC)
24V AC 50/60Hz (024AC)
24V DC (024DC)
12V DC (012DC)
Response Time
50 ms / 400 ms (Open/Close)
Insulation Class
Class F
Power
22 W / 33VA
Duty Cycle
100% ED
Connector
EN 175301-803 (formerly DIN 43650A)
Protection Class
IP 65 (with cable plug)
Circuit Diagram
1
2
2
1
Pipe
Body
Orifice
Kv (m3/h)
1/4" (014)
Brass (B)
10.5 mm (105)
1.27
1/4" (014)
Stainless Steel (S)
9 mm (080)
1.04
3/8" (038)
Brass (B)
10.5 mm (105)
1.45
3/8" (038)
Stainless Steel (S)
9 mm (080)
1.04
1/2" (012)
Brass (B)
10.5 mm (105)
1.51
1/2" (012)
Stainless Steel (S)
9 mm (080)
1.04

JP FLUID CONTROL
MANUAL-ST-SB-EN v1.2 www.jpfluidcontrol.com 2
ST-SB SERIES
SOLENOID VALVES
1. TECHNICAL SPECIFICATIONS
1.1. Principle of operation
A solenoid valve is a valve for neutral, clean liquids and gases, which is
electrically controlled with the aid of a solenoid. 2/2 way means that
the valve has two ports (input / output) and two positions (closed /
open). The valve is normally open, this means the valve closes when
voltage is applied.
Semi-direct operated solenoid valves combine the properties of both
direct and indirect operated solenoid valves. The force that is required
to open and close the diaphragm is supplied by both the solenoid
plunger as well as the pressure of the medium. This allows them to
work from a zero bar pressure differential. Furthermore, they can
control a high flow rate with a relatively small solenoid core. They can
be used in only one flow direction. This type of solenoid valves is used
in systems that require a reasonable flow rate, while the pressure
difference between input and output is low or unknown. Semi-direct
operated solenoid valves open slower than direct operated solenoid
valves, but they are suitable for higher flow rates.
1.2. Area of application
Body material
The ST-SB series is available with a brass or stainless steel body material.
Depending on the application, the right material should be selected.
Body material
Allowed media
Brass (ASTM #37800)
Neutral and non-corrosive media.
Stainless Steel (S316)
Suitable for aggressive media and
corrosive media like seawater.
Diaphragm
The ST-SB series is available with several materials. In the following table a
concise overview is presented of compatible media. Depending on the
application the correct diaphragm should be selected.
Diaphragm
Temperature
Allowed media
Not allowed
FKM
-10°C.120°C
Most fuels and
oils, cold water,
detergents,
compressed air.
Glycol-based
brake fluids,
ammonia gas, hot
water and steam,
low molecular
weight organic
acids (such as
acetic acid).
EPDM
-30°C.130°C
Water and
steam, alcohol.
Oils, fats, fuels,
solvents.
NBR
-10°C.80°C
Neutral media,
like air, cold
water, hydraulic
oil.
Fuels, strong
acids, brake fluid.
1.3. Flow chart
In the flow chart, the flow of water from 20°C is shown as a function of
the positive pressure difference across the valve. The flow rate is
expressed in liters per minute and the pressure in bar. The graph shows
different pipe diameters. The stainless steel valves (SS) of the ST-SB
series have a lower flow rate due to a smaller orifice.
1.4. Duty Cycle
The solenoid valve is suitable for continuous use. High switching
frequencies and high pressures can reduce the lifespan.
1.5. Compliance
The coils are CE marked and comply with the LVD Directive
(2006/95/EC) and Directive (2004/108/EC), provided that the cables
and connectors are properly connected.
1.6. Type label
The coil properties are displayed on a label on the coil. A second label is
provided with the valve that shows all relevant valve parameters. This
label must be attached to the other side of the coil. In the figure below,
an example is shown.
10
100
0.5 2.5 4.5 6.5 8.5 10.5 12.5 14.5
Debiet water (l/min)
dp (bar)
1/4" 1/2"
3/8" Stainless

JP FLUID CONTROL
MANUAL-ST-SB-EN v1.2 www.jpfluidcontrol.com 3
ST-SB SERIES
SOLENOID VALVES
JP FLUID CONTROL
CS2-230AC
230V~50Hz
IP-65
PRODUCTCODE
(Series & Voltage)
PROTECTION GRADE
CE-MARK
VOLTAGE & FREQUENCY
JP FLUID CONTROL
ST-SB012B105E
Normally Open
Pipe:
Seal:
Orifice:
1/2"
EPDM
10.5 mm
Pressure (AC /DC):
0 - (16 /10 ) bar
POSITION
PRODUCTCODE
PIPE CONNECTION
SEAL MATERIAL
MAXIMUM PRESSURE
ORIFICE
COIL
VALVE
1.7. Exploded view
In the figure below is an exploded drawing of the ST-SB series is
displayed.
#
Brass (B)
Stainless Steel
(S)
1
SS 302
SS 302
2
SS 302
SS 302
3
NBR/EPDM
/FKM
NBR/EPDM
/FKM
4
PA
PA
5
Epoxy
Epoxy
6
Top: 430F
Rest: SS 304
Top: 430F
Rest: SS 304
7
NBR/EPDM
/FKM
NBR/EPDM
/FKM
8
430F
430F
9
SS 302
SS 302
10
Brass
SS 316
11
NBR/EPDM
/FKM
NBR/EPDM
/FKM
12
NBR/EPDM
/FKM
NBR/EPDM
/FKM
13
Brass #37800
SS 316
2. GENERAL SAFETY INSTRUCTIONS
►This product is not a safety device and may not be used as
such.
►Damage caused by improper use, falling, improper operating
conditions or other reasons, may cause improper
functioning of the solenoid. Correct transport, proper
storage and installation, and proper use and maintenance,
are essential for reliable and error-free operation.
►It is the responsibility of the user to select the right product
for the application.
►The product may not function properly as a result of dirt,
wear, damage (for example, by dropping) or improper use.
Therefore, the product should not be used in applications
where a malfunction can cause danger or damage.
►This product is not intended or approved for medical
applications, food and/or application in gas appliances.
►Solenoid valves can only be used with clean liquids or gases.
It is recommended to install a filter before the solenoid
valve.
►Check the compatibility of the medium used, temperature
and other operating conditions with the materials and
specifications of the product.
►Never exceed the limits for pressure, temperature or voltage
as indicated on the product and/or in the technical
documentation.
►The temperature of a solenoid valve coil can rise during
operation; this is normal. Overheating will cause smoke and
a burning smell. In this case, the power supply must
immediately be disconnected.
►Warning: a valve opens and closes quickly. Improper use can
cause pressure transients (fluid hammer) in the pipes with
possible damage as a consequence.
►It is not allowed to change the construction of the valve.
►Beware of electric shock when working with electrical
equipment.
3. INSTALLATION AND MAINTENANCE
1.1. Safety instructions before starting
►It is recommended to install the product in a dry
environment. In moist environments, make sure that no
moisture can penetrate the coil, actuator or connector.
Install the solenoid valve in a safe way to avoid electric
shock, burning or other injuries. Ensure that the solenoid
valve is installed in an area with adequate ventilation to
facilitate heat dissipation. Make sure the solenoid valve is
not in contact with or in the vicinity of flammable materials.
Ensure that the product is protected from frost. Frost may
damage the product and/or block the moving parts, causing
the product to malfunction.
►Operations may only be performed when the system is not
pressurized, electrically disconnected and cooled down.
►Turn off the power supply before performing any work on
the solenoid valve to prevent the risk of electrical shock and
to prevent activation of the solenoid valve.
►The product is only safe when properly installed and
operated by qualified persons. Please read the safety
instructions and technical documentation carefully before
installation, use or maintenance.
►Always make sure to start the installation safely after
installation or maintenance.
►Water hammer is a typical consequence of a high flow rate
and pressure in pipes with small diameters. There are
several solutions to this problem:
►Reduce the pressure with a pressure reducing
valve before the solenoid valve.
►Increase the pipe diameter if possible.
►Dampen the water hammer by using a flexible
hose or buffer before the solenoid valve.

JP FLUID CONTROL
MANUAL-ST-SB-EN v1.2 www.jpfluidcontrol.com 4
ST-SB SERIES
SOLENOID VALVES
1.2. Installation
Clean fluids and gases
The solenoid valve can be used in combination with clean liquids or
gases. Check if there is any dirt in the piping or valve before installing.
It is recommended to install a filter (500 µm) before the solenoid valve.
Mounting the valve
Be aware of the direction of flow of the medium when installing the
valve. Solenoid valves with an arrow on the housing must be connected
in the indicated direction. The pipes on both sides of the valve must be
securely fastened. Use a wrench for both valve and pipe while
tightening to prevent unnecessary stresses in the system. The solenoid
valve must be fixed via the provided connection points. Only exert force
at the designated areas on the body such as the hexagon; never to the
coil or armature. Avoid vibration in the pipes. Use a suitable sealant for
threaded connections of the solenoid valve. Avoid the entry of thread
sealing material in the valve, this can lead to malfunctioning of the
valve.
Position
It is recommended to install the solenoid in vertical position with the
coil facing upwards. This reduces the probability of the collection of
debris in the solenoid valve. When the solenoid valve is mounted at an
angle, it is recommended to deviate maximally 90° from the vertical
position.
Maximum angle 90°.
IN
OUT
Check the flow direction with the help of the indications on the valve
body.
Only exert force at the designated faces, never at the coil or armature.
Installation of the coil
►Make sure the coil is labeled with the valve characteristics. The
device can be damaged by the use of unsuitable tools.
►The temperature of the coil increases during use, this is normal.
Overheating will cause smoke and a burning smell. In this case,
the power supply must be shut down immediately.
►The coils can be rotated if the coil nut is loosened. After the
determination of the correct position, the nut should be fastened
with a torque of 5Nm.
Installation of the cable plug
►Always connect the ground (3), which is provided with a
residual current device at voltages above 50V. Never use
liquid or gas piping for grounding electrical equipment. The
power supply is connected to terminals (1) and (2). The
polarity does not matter.
►Verify the voltage and frequency before connecting the coil.
►When mounting the connector, make sure that no moisture
can ingress between the coil and connector. The connector
screws should be fastened with a torque of 0.5Nm.
Connecting the power supply
►Never connect power to the coil when it is not attached to
the solenoid valve! The coil may burn out.
►Only connect power if you are sure that there is no pressure
in the system and no hazardous situations can occur.

JP FLUID CONTROL
MANUAL-ST-SB-EN v1.2 www.jpfluidcontrol.com 5
ST-SB SERIES
SOLENOID VALVES
12
31
2
3
Connector: EN 175301-803 (formerly DIN 43650A).
The poles (1) and (2) should be connected to the power supply, polarity i s
not important. Pole (3) is connected to the ground. Connect the connector
thoroughly to avoid ingress of moisture. Ensure that drops cannot slip
along the cable and enter the connector.
4. SPARE PARTS
The wear parts of the solenoid valve can be replaced with a repair kit
(plunger, plunger spring, membrane, membrane spring, O-ring).
Product code
Seal
Body
ST-SB-N-REV
NBR
Brass
(orifice 10.5 mm)
ST-SB-E-REV
EPDM
ST-SB-F-REV
FKM
ST-SB-SN-REV
NBR
Stainless Steel
(orifice 9 mm)
ST-SB-SE-REV
EPDM
ST-SB-SF-REV
FKM
The product code of the coil is as follows:
Product code
Voltage
CS2-380AC
380V AC 50Hz
CS2-230AC
230V AC 50Hz
CS2-120AC
120V AC 60Hz
CS2-024AC
24V AC 50Hz
CS2-024DC
24V DC
CS2-012DC
12V DC
Follow the drawing in 1.7 for the correct assembly of the solenoid
valve.
5. DISPOSAL
The removal of the product should be performed in accordance with
the applicable laws. Keep in mind the media that are still present in the
valve.
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