The RSP series 2/2-way solenoid valve is a high-performance direct-acting or semi-direct-acting shut-off valve designed for industrial automation, fluid control systems, and mechanical equipment integration. The series offers two standard configurations: Normally Closed (NC) and Normally Open (NO).Normally Closed (NC): Energized to open; de-energized to close. Ideal for safety applications where fluid flow must be automatically cut off upon power loss to prevent overflow or leakage.Normally Open (NO): Energized to close; de-energized to open. Ideal for applications requiring continuous flow or cooling circuits that must remain open during power failure.The RSP series features zero differential pressure start-up capability, enabling rapid on-off control even in zero-pressure pipelines, gravity-fed systems, or ultra-low pressure environments. Valve bodies are constructed from precision brass, SS304 stainless steel, or high-strength engineering plastic. Paired with high-performance, low-power coils, they operate stably at working pressures from 0 to 16 bar (depending on the model), ensuring zero-leakage blocking for water, air, neutral gases, and low-viscosity fluids.

Product Image:RSP 2-Way 2-Position (Normally Open) Solenoid Valve

Zero-Pressure Startup: Direct-acting or semi-direct-acting diaphragm structure – electromagnetic force directly drives the plunger without relying on medium pressure differential.

Two Operating Modes: NC ensures safe shut-off on power loss; NO ensures continuous flow on power loss.

Compact & Fast Response: Light moving parts and short stroke enable millisecond response times, ideal for high-frequency dosing and mixing.

Excellent Material Compatibility: Seals/diaphragms available in NBR, EPDM, or VITON – wear-resistant, anti-aging, and chemically stable.

Low Power Consumption & High Safety: Precision coil with low heat generation; spade, lead wire, or DIN connector options.

Structure Diagram:RSP 2-Way 2-Position (Normally Open) Solenoid Valve

Material List

Flow Curve Chart

Specification Sheet

Note: The table shows standard coil AC220V with G thread interface. Sealing material: blank for NBR, E for EPDM, V for VITON. When using ES coil solenoid valve, EPDM or VITON seals can be selected, but fluid temperature must be ≤80℃. Max working pressure applies to air, gas, water, hot water, liquid, light oil.

Outline Diagram:RSP 2-Way 2-Position (Normally Open) Solenoid Valve

Outline Dimension Table   （Unit:mm）

Due to the rapid R&D iteration speed of valve products from China kaiweixi Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!