Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

RSP 2-Way 2-Position (Normally Closed) Solenoid Valve
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Phone：+86（577）6730 7899
Mobile：+86 195 1816 9569
Fax：+86（577）6738 7099
Email：Lucas@kaiweixi.com
Address：No. 1 Linxia Road, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province, China
Website：https://www.kaiweixi.com

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RSP 2-Way 2-Position (Normally Closed) Solenoid Valve

Model：RSP-10/RSP-15/RSP-20/RSP-25/RSP-32/RSP-40/RSP-50
Specification：DN10-DN50
Temperature：-20~65 ℃
Medium： Water, liquids, gas, light oil (≤20 cst)

Pressure：0.3~16bar
Connection method：Threaded
Driving method：Pilot Operated
Material：Brass, 316 Stainless Steel

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RSP 2-Way 2-Position (Normally Closed) Solenoid ValveOverview

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 Closed) Solenoid Valve

RSP 2-Way 2-Position (Normally Closed) Solenoid ValveCharacteristic

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.

RSP 2-Way 2-Position (Normally Closed) Solenoid Valvestructure principle

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

Material List

No.	Part Name
1	Valve Body
2	Diaphragm
3	Diaphragm Spring
4	Valve Bonnet / Cover
5	Spring Washer
6	Bolt
7	Spacer Sealing O-ring
8	Movable Plunger Assembly
9	Plunger Spring
10	Armature Tube Assembly
11	Solenoid Coil
12	Internal Tooth Lock Washer
13	Hexagon Nut M10×1
14	Terminal Box Gasket
15	Terminal Box DIN43650A
16	Terminal Box Fixing Screw

RSP 2-Way 2-Position (Normally Closed) Solenoid Valvetechnology parameter

Flow Curve Chart

Specification Sheet

Pipe Thread G	Flow Diameter(mm)	Cv Value	Min. Working Pressure(bar)	Max. Working Pressure AC(bar)	Max. Working Pressure DC(bar)	Max. Fluid Temperature(℃)	Seal Material	Coil Insulation Class	Standard Coil Power VA(AC220V)	Standard Coil Power W(DC24V)	ES Coil Power VA(AC220V)	ES Coil Power W(DC24V)	Standard Order Model(Brass Body)	Standard Order Model(Stainless Steel 316 Body)
3/8"	13	4.5	0.3	16	16	80	NBR	H	22	13	3	3	RSP-10-AC220V	RSP-10J-AC220V
3/8"	13	4.5	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-10-E-AC220V	RSP-10J-E-AC220V
3/8"	13	4.5	0.3	16	16	120	VITON	H	22	13	3	3	RSP-10-V-AC220V	RSP-10J-V-AC220V
1/2"	13	4.5	0.3	16	16	80	NBR	H	22	13	3	3	RSP-15-AC220V	RSP-15J-AC220V
1/2"	13	4.5	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-15-E-AC220V	RSP-15J-E-AC220V
1/2"	13	4.5	0.3	16	16	120	VITON	H	22	13	3	3	RSP-15-V-AC220V	RSP-15J-V-AC220V
3/4"	20	7.6	0.3	16	16	80	NBR	H	22	13	3	3	RSP-20-AC220V	RSP-20J-AC220V
3/4"	20	7.6	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-20-E-AC220V	RSP-20J-E-AC220V
3/4"	20	7.6	0.3	16	16	120	VITON	H	22	13	3	3	RSP-20-V-AC220V	RSP-20J-V-AC220V
1"	25	12	0.3	16	16	80	NBR	H	22	13	3	3	RSP-25-AC220V	RSP-25J-AC220V
1"	25	12	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-25-E-AC220V	RSP-25J-E-AC220V
1"	25	12	0.3	16	16	120	VITON	H	22	13	3	3	RSP-25-V-AC220V	RSP-25J-V-AC220V
1 1/4"	32	24	0.3	16	16	80	NBR	H	22	13	3	3	RSP-32-AC220V	RSP-32J-AC220V
1 1/4"	32	24	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-32-E-AC220V	RSP-32J-E-AC220V
1 1/4"	32	24	0.3	16	16	120	VITON	H	22	13	3	3	RSP-32-V-AC220V	RSP-32J-V-AC220V
1 1/2"	40	30	0.3	16	16	80	NBR	H	22	13	3	3	RSP-40-AC220V	RSP-40J-AC220V
1 1/2"	40	30	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-40-E-AC220V	RSP-40J-E-AC220V
1 1/2"	40	30	0.3	16	16	120	VITON	H	22	13	3	3	RSP-40-V-AC220V	RSP-40J-V-AC220V
2"	50	48	0.3	16	16	80	NBR	H	22	13	3	3	RSP-50-AC220V	RSP-50J-AC220V
2"	50	48	0.3	16	16	130	EPDM	H	22	13	3	3	RSP-50-E-AC220V	RSP-50J-E-AC220V
2"	50	48	0.3	16	16	120	VITON	H	22	13	3	3	RSP-50-V-AC220V	RSP-50J-V-AC220V

RSP 2-Way 2-Position (Normally Closed) Solenoid Valvestandard size

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

Outline Dimension Table （Unit:mm）

Product Model	A	B	C	D	Copper Valve Weight (Kg)	Stainless Steel Weight (Kg)
RSP-10	66	48	112	97	0.7	0.7
RSP-15	66	48	112	97	0.7	0.7
RSP-20	75	58	118	100	0.85	0.8
RSP-25	96	69	125	101	1.35	1.3
RSP-32	131	96	150	120	2.8	2.8
RSP-40	131	96	150	120	2.6	2.6
RSP-50	165	120	165	130	3.9	3.6

Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

RSP 2-Way 2-Position (Normally Closed) Solenoid Valve

More Solenoid valve for water, gas, and liquid>>

More solenoid valve>>

More valve>>

RSP 2-Way 2-Position (Normally Closed) Solenoid Valve