Product information for German GSR solenoid valve 7541/0802/.328

Brand

GSR/Germany

Flow Direction

Other

3C Valve Category

Industry

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Marine, General

German GSR Solenoid Valve Model 75 Selection Information

German GSR Solenoid Valve 7541/0802/.328

Model 75 Two-Position Three-Way Direct-Acting Solenoid Valve

Working Principle

Standard Type: When de-energized, port P is closed relative to port A, and port A is open relative to port R. When energized, the electromagnetic force generated by the coil is sufficient to lift the seal from the valve seat. This type of valve does not require differential pressure for operation. It closes via a spring when de-energized.

Control Type: Direct-acting

Structure: Plunger construction

Size Range: G1/4, DIN ISO 228

Pressure: 0-40 bar (see table)

Fluid: Neutral, gaseous, or liquid fluid

Viscosity: 22 mm²/s (maximum)

Fluid Temperature: -10/+80℃

Ambient Temperature: +35℃ (maximum)

Valve Body: Brass

1.4581 Stainless Steel (AISI 316Ti)

Internal Components: Brass and Stainless Steel (AISI 430F)

Seal: FKM

Mounting: Any position

Standard Voltage: AC: 24, 42, 110, 230V 50/60Hz

DC: 24, 110V

Voltage Tolerance: -10%/+5%

Function Power: 10¹² = 18.5 Watt

1148 = 10 Watt

Protection Class: IP65, DIN40050

Operating Factor: 100% ED-VDE 0580

Electrical Connection: DIN43650 Junction Box

German GSR Solenoid Valve

Selection Principles

Safety:

1. Corrosive Media: Plastic King Solenoid Valves and All-Stainless Steel Valves are Recommended; For Strongly Corrosive Media, Diaphragm Type Valves Must Be Selected. For Neutral Media, Solenoid Valves with Copper Alloy Valve Shells are Also Recommended; Otherwise, Rust Shavings Often Fell from the Valve Shell, Especially in Infrequent Operations. Copper Valves Cannot Be Used for Ammonia.

2. Explosive Atmospheres: Products with Appropriate Explosion-Proof Ratings Must Be Selected. For Outdoor Installations or Dust-Rich Environments, Waterproof and Dustproof Models Should Be Selected.

3. The Nominal Pressure of the Solenoid Valve Should Exceed the Maximum Working Pressure in the Pipeline.

Applicability:

1. Media Characteristics

1) Different types of solenoid valves should be selected for gaseous, liquid, or mixed states.

2) Different specifications of products should be used for different media temperatures; otherwise, the coil will burn out, the seals will age, and the lifespan will be severely affected.

3) Media viscosity is generally below 50 cSt. If it exceeds this value, a multi-functional solenoid valve should be used when the nominal diameter is greater than 15 mm; a high-viscosity solenoid valve should be used when the nominal diameter is less than 15 mm.

4) When the media cleanliness is not high, a backflush filter valve should be installed before the solenoid valve. For low pressure, a direct-acting diaphragm solenoid valve can be selected.

5) If the media flows in a directional manner and backflow is not allowed, a bidirectional flow valve is required.

6) The media temperature should be selected within the allowable range of the solenoid valve. 2. Piping Parameters

1) Select the valve port and model according to the medium flow direction requirements and pipeline connection method;

2) Select the nominal diameter according to the flow rate and valve Kv value, or select the same as the pipeline inner diameter;

3) Working pressure difference: For a minimum working pressure difference above 0.04 MPa, an indirect pilot-operated valve can be selected; for a minimum working pressure difference close to or less than zero, a direct-acting or step-by-step direct-acting valve must be selected.

3. Environmental Conditions

1) The maximum and minimum ambient temperatures should be within the allowable range;

2) In environments with high relative humidity or water droplets/rain, a waterproof solenoid valve should be selected;

3) In environments with frequent vibration, bumps, and impacts, a special type should be selected, such as a marine solenoid valve;

4) In corrosive or explosive environments, corrosion-resistant types should be selected based on safety requirements;

5) If space is limited, a multi-functional solenoid valve should be selected, as it eliminates the need for a bypass and three manual valves and facilitates online maintenance. 4. Power Supply Requirements

1) Select AC or DC solenoid valves according to the type of power supply. Generally, AC power is more readily available.

2) Prioritize AC220V or DC24V voltage specifications.

3) Power supply voltage fluctuations are typically +10% to -15% for AC and ±10% for DC. If these fluctuations exceed the tolerance, voltage stabilization measures must be taken.

4) Select the rated current and power consumption according to the power supply capacity. Note that AC has a higher VA value during startup; if the capacity is insufficient, indirect-acting solenoid valves should be preferred.

5. Control Accuracy

1) Ordinary solenoid valves only have open and closed positions. For high control accuracy and stable parameters, multi-position solenoid valves should be selected.

2) Activation Time: The time from the electrical signal being connected or disconnected to the main valve completing its action.

3) Leakage: The leakage values ​​given in the sample are for commonly used economic levels. Common Options:

· NPT Connection

· Oil-free and Grease-free = OF (Oxygen Application)

· Nickel Plated = CN

· Manual Operation = HA

· Other Diameters

· UN = Universal (Each port can be made into a P-port)

Our company mainly deals in European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi