8551A001 EF8551A001 ASCO 8551 series 1/4" Aluminum Body Direct Mount Inline Spool Valves

1. Product Name: 8551A001 EF8551A001 ASCO 8551 series 1/4" Aluminum Body Direct Mount Inline Spool Valves

2. After-sale service

We can provide a series of after-sale service, such as product introduction, mounting, debugging, technical support and so on.

3. Drawing

Series	8551 inch(mm)
NPT	1/4
L1	5.47(139)
L2	7.56(192)
H1	1.3(33)
W	1.77(45)

4. Product show

5. Features

• Compact spool valve convertible from 3/2 to 5/2

• NAMUR mount construction

• Standard manual operator

• DIN, Watertight and Explosionproof solenoids available

• Single and dual solenoid constructions

• Mountable in any position

• Vents air from spring side of actuator to prevent 

corrosion of actuator

6. Nominal Ambient Temp. Ranges

SC: AC/DC: 5˚F to +140˚F (-15˚C to 60˚C) 

EF: AC: 5˚F to +104˚F (-15˚C to 40˚C)

DC: 5˚F to +77˚F (-15˚C to 25˚C) 

WT: AC: 5˚F to +140˚F (-15˚C to 60˚C) 

DC: 5˚F to +77˚F (-15˚C to 25˚C) 

Note: For temperatures below 32˚F (0˚C) moisture-free

air must be used. 

Refer to Engineering Section for details.

7. Approvals

SC (2.5W and 3W only) UL recognized component, CSA certified. (Series 8551 only)

WT: UL listed, CSA certified. (Series 8551 only)

EF: UL and CSA listed solenoid. 

Meets applicable CE directives.

SIL 3 capable per IEC 61508 on normally closed single solenoid. Third party certification provided by EXIDA.

Refer to Engineering Section for details.

8. Solenoid Enclosures

Standard: - Prefix

SC = IP65 type DIN (open frame) per 46244

WT = Combination General Purpose and Watertight Types 1, 2, 3, 3S, 4, and 4X

EF = Combination Explosionproof and Watertight Types 3, 3S, 4, 4X, 6, 5P, 7, 9

Class I, Div. 1 (Groups A - D) and Class II, Div. 1 Type 9 (Groups E-G)

9. Construction

10. Electrical