These solenoid valves are suitable for non-aggressive liquid and gaseous media that are compatible with the construction materials used in the valves.Maximum admissible viscosity:5°E (37 cStokes or mm²/s).Minimum ambient temperature:–10°C;maximum ambient temperature:60°C with class “A”or “F”coils, 80°C with class “H” coils.The minimum and maximum temperatures of the medium are shown in the table, according to the type of valve concerned. N.B.: at very low ambient temperature, the medium can solidify and damage the solenoid valve.

MATERIALS
Body in OT58 brass, generally with female G threaded ports, (ISO228).Internal parts and guide tube in stainless steel.Seals according to application:NBR (nitrile-butylene elastomer), FPM (fluorocarbon elastomer), PTFE (reinforced polytetrafluorethylene), EPDM(ethylene-propylene elastomer), INOX (stainless steel), RUB (synthetic corundum on stainless steel).

COILS
Comply with EC standards, directive 73/23CEE and relative modification 93/68EEC.Coils wound with class “H”wire, vacuum impregnated with polyester resin.Class “F”insulation (155°C) encapsulated in glass fiber reinforced PBT (polybutylene-terephtalate) or class “H”insulation (180°C) encapsulated in glass fiber reinforced PPS (polyphenylsulphide), or class “A”(105°C) for latching versions in PP-VO (self-extinguishing polypropylene).
Standard electrical connections (2 poles plus earth) for type Z1-Z5-Z6-Z8-Z9 coils and DIN 43650 connections for Z1-Z5-Z9.Also suitable for 6.3x0,8, except for Z0 type designed for 2,8x0,5, quick connectors or for micro plug connectors.Protection class IP65 EN60529(DIN43650) with coil duly fitted with the plug connector.With the exception of certain versions, all the coils have obtained SEV-ASE (Swiss) approval and are suitable for continuous duty (ED100%).

VOLTAGES
Standard:24-110-220-230V/50Hz AC and 12-24VDC.Other voltages and frequencies supplied on request subject to minimum quantities. Voltage tolerances:+10%-15%for AC;+10% –5% for DC.Standard voltage for latching versions:6-12V DC;tolerance:±10%.

FLOW RATE
The flow factor Kv of each valve is indicated, so that the flow Q can be calculated as a function of the pressure drop Dp (see chart or formula). The Kv represents the flow of water, expressed in m³/h, at a temperature between 5°C and 30°C, that passes through the solenoid valve with a pressure drop of 1 bar (Standard VDI/VDE2173).

RESPONSE TIME
The time requested to pass from fully open to fully closed or vice-versa is a function of the size of the orifice, the operating system, the voltage value, the type of medium, the relative pressure and temperature and the pressure drop (Dp).Depending on the diameter of the orifice, the response time is about few tens of milliseconds for direct acting valves and hundreds or thousands of milliseconds for pilot-operated or forced lifting (zero pressure) valves.

USEFUL LIFE
The useful life of the solenoid valve is influenced by the pressure, temperature, type of medium and the voltage.Generally speaking, these solenoid valves are reliable for more than 2 million cycles and, in clearly defined cases and with special treatments, for a much larger number of operations.

OPTIONS
On request, solenoid valves can be supplied for special applications to different designs and with different materials or performances.On request and subject to minimum quantities, the following can be supplied:different seals, nickel-plated (Ni-P) brass bodies or PTFE (polytetrafluorethylene) coated bodies and general features complying with BGA-FDA-NSF standards, other types of connections (NPT, male etc.), coils with flying leads.Also available with domestic approval (IMQ) and international approvals (UL, VDE, WRC etc.).

HOW TO ORDER
Always use the complete code, followed by the port size (G) and the orifice diameter in mm. Specify the voltage and relative frequency for AC (e.g.L177B04-Z610A1/8”x1,6V220/50-60Hz).