GENERAL CATALOGUE 2021
280Pages

This general catalogue has been delivered to: Mrs/Mr Company address on date by our EDITION EN 01/21

GENERAL INFORMATION COAXIAL AND PNEUMATICALLY OPERATED VALVES PINCH VALVES SOLENOID PILOTS SPARE PARTS

General information 1.2 Type number composition 1.3 Construction details 1.4 Seal material 1.5 Media compatibility 1.6 Electrical features 1.6.1 Protection class 1.6.2 Insulation class 1.6.3 Service 1.6.4 Power 1.7 Units of measure 1.8 Flow calculation 1.9 Technical tables 1.9.1 Pressure 1.9.2 Viscosity 1.9.3 Temperature 1.9.4 Steam 1.9.5 Specific gravity 1.10 Response time 1.11 P.E.D. Directive (2014/68/UE) 1.12 Operating instructions and installation 1.13 Model identification

The solenoid valves illustrated in this catalogue have applications in all industrial sectors, being compatible with a vast range of fluids. The quality of the materials used and the precise engineering of the parts, coupled with rigorous testing of the large production guarantees their service capability. In addition to the standard versions published in the catalogue, we are able to offer alternative designs to resolve specific problems.

1.2 Type number composition for servo-assisted versions 1 SERIES CURRENT E D AC/DC CURRENT SEAL B=NBR E=EPDM F=EPDM food appr. H=HNBR M=EPDM WRAS N=CHLOROPRENE V=FPM Example : E207IV50///20E Solenoid valve suited to work in alternative or direct current 2/2 normally open, 2”BSP connections, FPM seal, orifice 50 mm, coil width 30mm, class F insulation, power consumption 15VA, voltage 220-230V 50/60Hz. Type number composition for direct-acting versions SERIES CURRENT E D AC/DC CURRENT ORIFICE IN TENTH OF MILLIMETER CONNECTION X=Flange K=Spiggot N=1/8” Male P=Hosetail W=Compression Z=Push-in...

Type number composition for angle seat valves 70mm actuator Standard 70mm actuator High pressure 70mm actuator Proportional 50mm actuator Standard 50mm actuator Proportional Optical position indicator (standard) Electrical position indicator Example : P170DGW15/E Angle seat valve 2/2 NC actuator Ø70, G1/2” connection, PTFE seals, electrical position indicator Type number composition for coils SPECIAL VERSION VARIANT INSUL. CALSS Self-extinguishing Nylon Example : 30B Coil width 22mm in Nylon 6+18% Fibre Glass Insulation class F Voltage 24V 50/60Hz Power 8

1.3 Construction details Solenoid valves are equipment used to control media in pressure. Their action is to either open or close the interception device, directly or indirectly, when the coil is energized. The most important components of the solenoid valve are : 1.The body valve, which has an inlet and an outlet connection and an orifice for media flowing. 2.The armature tube, with the core, where the coil is fitted. 3.The plunger, which in some cases serves like a seal, sliding in the armature tube. 4.The coil, which produces the magnetic field required to move the plunger.

1.3.1 Methods of operation 2 way direct-acting NORMALLY CLOSED NORMALLY OPEN The 2 way solenoid valve has an inlet and an outlet connection within the valve body. It can be normally closed (2/2 NC). In this case the media is prevented from flowing through the orifice by the plunger seal. When connected to an electrical supply, the orifice opens allowing the inlet to feed the outlet port. It can be normally open (2/2 NO). In this case the orifice is open, the inlet feeds through the outlet. When connected to an electrical supply the orifice is closed. The operation, in both cases depends...

Servo-assisted action With larger orifices, static pressure increases, and it’s still necessary that the magnetic field produced by the coil is able to control these forces. This is achieved by using servo-assisted action in the solenoid valve. In this design the media pressure helps to keep the main valve seal closed. The normally closed design (2/2 NC) has an inlet and outlet connection in the valve body. When the coil is not energized, the flow is blocked by the main seal, which could be either a diaphragm or a piston design. In this mode the medium flows through a small hole in the...

The normally open (2/2 NO) version has an inlet and outlet connection in the valve body. With larger orifices, static pressure increases, and it’s still necessary that the magnetic field produced by the coil is able to control these forces. This is achieved by using servo-assisted action in the solenoid valve. In this design the media pressure helps to keep the main valve seal open. When the coil isn’t energi zed, the flow is not interrupted by the main seal, which could be either a diaphragm or a piston design. In this mode the medium flows through a small hole in the diaphragm or piston...

Angle seat valves This type of valve is controlled by a pilot fluid supplied to the actuator by means of a pilot valve. The control part of the valve (pneumatic actuator) is connected to the body valve by a stem. The main orifice is closed by a poppet that includes the main seat. The pressurizing of the main actuator of the valve opens the flow of the fluid. These valves are mainly suitable for contaminated or extremely viscous process fluids.

EPDM (Ethylene-propylene-dylene ) Commercial denomination BUNA -N PERBUNAN ELAPRIM JSR-N BUNA- AP DUTRAL NORDEL General characteristics A synthetic elastomer with good mechanical and thermal properties. Good resistance to oils. Poor resistance to ozone and atmospheric derivatives. Water (max T=+70°C) Air (max T=+90°C) Mineral oils and their derivates, hydrocarbons, methane, ethane, propane, butane, kerosene oil, fuel oil. A synthetic elastomer derived from the co-polymerization of ethylene and propylene. Suitable for use with nonphosphoric based hydraulic fluids(hold). Water and steam to a...

The following table has the scope to provide an indication of the general characteristics with regards to the compatibility with the different materials and media. To determine the compatibility with corrosive fluids it is important to know all the data relative to : temperature, concentration and media composition. MEDIA Acetone Acetylene Argon hold Benzol Butane Calcium monoxide Carbon dioxide (liquid) Carbon disulphide Chloroform De-ionised water De-mineralised water Dry carbon dioxide (gas) Ethane Ethanol Ethyl acetate Ethyl cloride Ethylene glycol Formaldehyde Freon Fuel oil Glycerine...