2WK Series 2-Way Direct Acting Normally Open Zero Differential Solenoid Valve (NO) – Brass & SS304
3/8″ to 2″ NPT/G General Purpose Brass & Stainless Steel Zero Differential Electric Solenoid Process Valve, Normally Open (NO), 0-0.6MPa
Zero-Pressure Start
Media: Water, Air, Gas, Oil
Fluid Temperature: -5°C to 80°C (23°F to 176°F)
Working Pressure: 0 – 6 bar / 0 – 87 PSI (0.0MPa – 0.6MPa)
Sealing Material: NBR
Product Overview
The 2WK Series is a high-performance, two-position two-way solenoid valve featuring a direct-acting or semi-direct-acting lifting diaphragm structure. This design allows for “Zero Differential” activation, ensuring the valve opens and closes reliably even at 0.0 MPa (0 PSI), making it the ideal solution for systems with inconsistent or minimal pressure, such as gravity-fed tanks and low-pressure pipelines.
Technical Data
Connection Size: G (NPT) 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″
Operation Model: Direct Acting
Body Material: Brass / SUS304
Working Pressure: 0 – 6 bar / 0 – 87 PSI (0.0MPa – 0.6MPa)
Voltage Options: DC 12V, 24V / AC 110V, 220V, 240V
Sealing Material: NBR (Standard), EPDM, VITON (FKM)
Wiring: Flying leads / DIN connector / Water-proof coil
Protection Level: IP65
Certification: CE
“Custom specifications including special voltages, high-temperature seals, and specific flow requirements are available upon request.”



| Voltage | AC220V / AC230V, AC110V / AC120V, DC24V |
|---|---|
| Port Size | 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″ |
| Body Material | Brass, SS304 |
| Upgrade No-Heat Smart Coil | No-Heat Smart Coil — 0.5W DC / 1.5W AC, None |








