ASCO Solenoid Valve EF8551G403｜YOYIK

ASCO Solenoid Valve EF8551G403｜YOYIK

Product Introduction

The ASCO Solenoid Valve model EF8551G403 adopts a precision pilot-operated diaphragm structure, 2-way normally closed design, nominal pressure PN1.6MPa, made of brass body and FKM seal. It is a high-reliability control component under ASCO brand, integrating fast response and stable sealing, suitable for industrial, power plant and automation system fluid control.

Customized for industrial automation and power plant auxiliary systems, it handles air, water, light oil and neutral gas, working temperature -10℃~80℃, coil voltage 220V AC, flow rate up to 15m³/h. It integrates seamlessly with control systems, realizing rapid on-off control and ensuring stable operation of automation loops.

Company Profile

YOYIK is an authorized cooperative partner of ASCO, focusing on the supply and after-sales service of ASCO solenoid valves and industrial control accessories, with complete quality assurance system and global supply chain, providing professional matching and technical support for ASCO EF8551G403 and other models.

Product Features & Operation Points

- ASCO original standard EF8551G403 specifications (PN1.6MPa, 2-way normally closed), pilot-operated diaphragm structure, suitable for fluid on-off control, meeting industrial automation and power plant control requirements.

- Pilot-operated diaphragm design, realizing fast response (≤50ms) and large flow control, low power consumption, adapting to frequent switching working conditions of industrial automation and power plant auxiliary systems.

- Brass body with FKM seal, excellent corrosion resistance and temperature adaptability (-10℃~80℃), good pressure-bearing performance, ensuring long-term stable operation without leakage under harsh industrial environments.

- ASCO original precision machining and sealing technology, IP65 protection grade, anti-dust and waterproof, complying with international industrial control safety standards, avoiding system failure caused by external interference or medium leakage.

- Complies with ISO, DIN and NAMUR standards, threaded connection for easy installation and maintenance, fully compatible with ASCO original accessories, reducible maintenance costs and customizable according to project needs.

Applications

Power plant auxiliary system control, industrial automation fluid loops, air compressor pipeline control, water treatment equipment on-off, light oil conveying control, HVAC system control, instrumentation auxiliary control.

Statement

Genuine ASCO products are provided with complete quality assurance. Specifications can be customized according to project requirements. Contact our technical team for detailed parameters and after-sales support.

Our products include various replacement parts suitable for power plants, as listed below:
#DF-ASCO EF8551G403-DF
solenoid valve 4WE6D61B/CW220-50N9Z5L/V
pressure relief valve YSF12-70/130-KJTA
sealing ring OR-009-V
Driven gear of gear pump 0450/0010/0060
Accumulator bladder with valve NXQ-A-16/20-FY
Stop valve J61Y-250 SA-105
lock line ф1.6×5m
servo valve SM4-20(15)57-80-40-10-H607H
sealing oil re-circulating pump repair kit HSNH-280-43NZ
stator water pump mechanical sealshaft sleeve LK45
sealing ring HB4-56J8-187
Overflow valve LOF-98H
Shaft sleeve HZB253-640-01-10
Pressure Relief Valve YSF9-138/130KKJ
Dermal vesicle NXQA-25/20-L-EH
oil pump HSND280-43NZ
Mechanical seal CZ50-250C
Electric valve DKF-32
Balance drum locking washer DG600-240-03-18
mechanical seal ACF 090N4 IRBP
Spring type safety valve A48Y-100I
pressure hose SMS-12/15-2438-C
VAE 1-24-DC-16 24102-12-4R-B13
pressure hose SMS-10/N1/4-2438mm-B
Bushing 1-23-38706-250
right MSV actuator unloading valvesealing set YJM-131B
Solenoid valve 8223G005220VAC
Oil throwing ring DG600-240-04-03
servo valve ZD.01.003
jacking oil pump A3H37-F-R-01KK-10
Solenoid valve 8030G66220VAC
ASCO EF8551G403

Accumulator bladder and seals NXQ-B-10-F-E
pressure hose SMS-10/20-3048mm-C
O-ring HY-SO-0092-V
relief valve DGMC3ATGW41
The electromagnetic valve 0508.1488T0301.AW025
Globe valve J61Y-500
Fluorine rubber ring DH.00.010
Pneumatic stop valve J661Y-16V
pressure hose SMS-12/15-915mm-B
oil pump HQ37.12Z
pressure relief valve YSF16-35/25-KJTH
DISK,BALANCE 100AY67X6-53
Pressure relief valve YSF6-35/25
Round nut locking washer HZB253-640-01-03
pressure hose SMS-10/N1/4-305mm-C
Fire resistant oil pump PVH074R0IAB10A250000002001AE010A
Solenoid Valve DEA-PCV-03/0560
PTFE pad YJM364-008
accumulator bladder NXQ1-L25/31.5-H
pressure hose SMS-12/15-305mm-C
transmission shaft 0130/0010/0080
EH oil main pump PVH098R01AD30A250000002001AB010A
The electromagnetic valve 4WE6J61/CW22050N925L
ball valve BKH G3/4 20 11251
Solenoid valve 4WE10D33/CG220N9K4
flow Regulating valve RV1-10-0-18
Fluoro Rubber O-Ring OR0311438
Ast solenoid valve SV4-10V-0-0-220AC
sealing ring HB4-56J8-96
diaphragm SF-PN16-125
Pressure measuring hose S100-AC-AC-500(G1/4)
ASCO EF8551G403

DFYLCTY-2026-2-5-A