DFD series 2-way pilot operated normally closed brass stainless steel water air solenoid valve 3/8＂ ～ 3＂

The valve is opened for the second pilot valve solenoid valve structure mainly by the pilot valve and main valves, main valve with rubber seal structure. Chang position, the pilot valve plunger seal the mouth cavity pressure balance valve, the main valve port closed. When the coil is energized, the electromagnetic force on the movable core pull, the main valve chamber media leaks from the pilot valve port, as well as a pressure difference, the diaphragm or valve cup was quickly hold up, mouth open the main valve, the valve was then the passage. When the coil power, the magnetic field disappears, the core reset and closed pilot valve port, after the pilot valve and the main valve cavity pressure equalization valve and was closed.

DFD-series 2-way pilot operated(NC)specification table

(ES coil can match EPDM and VITON, but medium temperature must be ≤80℃)

options :

Rc thread

sealing material: EPDM VITON

digital timer, LED light connector

ES low power energy saving coil(AC220 V3VA DC24V 3W)

Valvebody material: SS316

Coil: wired plastic seal

Founded in 1965, Yuyao No.4 Instrument Factory has been a professional manufacturer of solenoid valves and has enjoyed an excellent reputation through the past more than 50 years in China. With the introduction of foreign cutting-edge technology, and the sustained innovation and self-improving, the company has mastered the key technology and is keeping pioneer position in the field of fluid solenoid valve.

The company is equipped with superior production machines, advanced process flows, complete testing systems; the products have sophisticated structure, reliable performance, fine outlook and reasonable price, covering over 40 series and 3000 specifications, having been exported to all over the whole world since 2004.

Founded in 1965, Yuyao No.4 Instrument Factory has been a professional manufacturer of solenoid valves and has enjoyed an excellent reputation through the past more than 50 years in China. With the introduction of foreign cutting-edge technology, and the sustained innovation and self-improving, the company has mastered the key technology and is keeping pioneer position in the field of fluid solenoid valve.

The company is certified by the ISO9001:2000 and the GJB9001A-2001 military quality system, we have production license and 3C certificate for Ex-proof products, many products have passed the CE、ROHS、ACS、FDA、UL etc. international certifications. The company participated in drafting the national safety standards for GB30439.6—2014 solenoid valve, and is authorized to manufacture customized solenoid valves for the military products.

The company is equipped with superior production machines, advanced process flows, complete testing systems; the products have sophisticated structure, reliable performance, fine outlook and reasonable price, covering over 40 series and 3000 specifications, having been exported to more than twenty countries and areas, such as USA, France, UK, Germany, Italy, Australia, Russia, Taiwan, and the middle east countries etc., and our distributors spread all over the whole country.

The company owns high quality staff and professional R&D group, with strict and innovative attitude, we can customize products to cater specific requirements of customers, and provide fast-response after-sale support. We persist in “customer-first, integrity, human-oriented, excellence”, offering satisfied products and service to the customers on-promise, enhancing the “Round Star” brand.

Sincerely welcome to visit our company, looking forward to having a nice cooperation and common development.