Solenoid Valve Terminology
Direct acting valves and diaphragm or piston valves are explained with components such as coil, solenoid base, solenoid core, core spring, sealing disc, and valve body. Direct acting valves open when the coil is energized and do not require a minimum operating pressure differential. Pilot-operated valves require a pressure difference between the inlet and outlet to function.

Engineering Information
Materials for valve construction are chosen based on the fluid type, including brass, bronze, thermoplastics, stainless steel, and nickelized metals. Seals are selected based on mechanical, thermal, and chemical requirements, with NBR, EPDM, FPM, and PTFE being common choices. Electrical characteristics include continuous duty design, voltage tolerance, and power consumption details. Coils are available with various IP ratings for environmental protection.

Valve Types
2/2 Direct Acting Valves: Closed when de-energized, do not require a minimum pressure differential, available in various port sizes and materials.
3/2 Direct Acting Valves: Feature three ports for two simultaneous pathways, often used as cylinder activators, can function as normally open (NO).
2/2 Pilot Operated Diaphragm Valves: Require a pressure difference to operate, suitable for specific pressure and flow requirements.
2/2 Pilot Operated Piston Valves: Designed for higher pressure applications, available in brass bodies with PTFE seals, offer normally open (NO) configurations.

Installation and Recommendations
Valves can be installed horizontally or vertically, with an upright coil position recommended. It is advised to clean pipelines before installation and use strainers to minimize impurities. Special coil sealing sets are recommended for damp environments.

Troubleshooting
Guidelines for addressing common issues with solenoid valves, including checking electrical connections, pressure differentials, and ensuring proper installation.

Specifications
Valves are listed with different port sizes, orifice sizes, Kv values, differential pressures, and materials. Information on fluid and ambient temperature ranges, viscosity limits, response times, voltages, power consumption, duty cycles, and electrical protection standards is provided.

Ordering Instructions
To order a valve, state the order code and voltage. A questionnaire is available for easier valve selection. Options for explosion-proof coils and other versions are available upon request.

Technical Data
Includes internal parts materials, seal materials, fluid temperature ranges, ambient temperature limits, viscosity limits, response times, voltages, power consumption, duty cycles, and electrical protection standards.

Coils
Details on standard and low power options, order codes, and power ratings for various voltages.

Product Specifications
TMEx40 Series: Available in various voltages with 10 W and 22 W power, suitable for extremely humid environments.
TM24 Series: Low power and heating, available in 230 VAC (4 W), 24 VAC (4 W), and 24 VDC (9 W).
TM25b and TM30b Series: Available in 24 VDC (6 W and 10 W) and 12 VDC (6 W and 10 W).
Coil Sealing Sets: For use in humid environments, with specific order codes for different valve types.

Troubleshooting Guide
Pilot Operated Diaphragm and Piston Valves: Common issues include valves not opening or closing, and leaks. Solutions involve checking voltage, cleaning or replacing parts, and ensuring correct pressure and flow direction.
Direct Acting Valves: Similar issues with solutions focusing on voltage checks, cleaning, and part replacements.
Coils: Issues like coil burning are addressed by cleaning, sealing, and ensuring correct voltage and temperature conditions.

Pressure Conversion Table
Provides conversions between bar, MPa, and PSI for various pressure levels.

Orifice Sizes
Lists orifice sizes in millimeters with approximate inch equivalents.

Basic Unit Conversions
Includes conversions for pressure, flow rate, temperature, and mass.

Questionnaire
A form to gather application-specific information such as fluid type, temperature, pressure, flow rate, valve design, and environmental conditions.