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The Powergenex SS3 Smart Valve Positioner is a flameproof version of the SS2 model. Its explosion-proof housing is compliant with safety requirements set by IECEx, ATEX/TR-CU/KC Ex d IIC T6.

This compact positioner can be used on single or double acting actuators without further adjustments required. It also automatically detects reverse acting or direct acting types despite wrong air connections.

This smart positioner can be used with either analog, HART, Profibus PA, or Foundation Fieldbus communication protocols. It’s capable of improving control of high-friction valves and flagging performance failures.

The SS3 Smart Valve Positioner comes in two types: linear or rotary. It’s also available with a NAMUR standard mount and various mounting brackets for rotary valves.

Technical specifications




SS3 (Explosion-proof)

Input signal

4–20mA DC
9–32 VDC

Air supply pressure

1.4–7 bar, filtered, compressed dry and non-oiled to meet Class 3 of ISO 8573-1

Protection class

Flameproof IECEx / ATEX / KC Ex d IIC T6, IP66

Output pressure range

0–100% of supply air pressure

Performance characteristics

Linear, equal percentage, quick opening, user set (17 points)

Operating temperature

-30°C to +75°C
(-40°C on request)

Material specifications


Aluminum die-cast/powder-painted

How we help you choose the right valves:

1. Tell us what you need

Talk to our experts about your application, which valves and controls you need, and any repair or maintenance concerns.

2. Choose the right solution

We’ll do all the analysis, discuss the options with you, and make a recommendation—the valves we’d choose in your shoes.

3. Get the job done

Get the right valves for the job, fitted out, tested, and ready to install. We’ve got your back with ongoing repairs and maintenance.

Talk to a valve specialist

Got questions? Need advice? Our valve specialists can give you practical advice to help you get on with the job.

Valve automation & repairs

Actuators. Positioners. Controls. Valve repairs. Whatever you need, our valve workshop can handle it.