Accessories

We offer a variety of accessories to match our standard components.

Feedback units

Intelligent feedback unit SK-i 310 - from 2025

Inductive feedback sensor for manually operated valves

Inductive feedback sensor for pneumatically actuated valves

Electrical feedback unit SK.500

Intelligent feedback unit SK-i 310 - from 2025

Clear visual status and position indication thanks to powerful LED signalling
Automatic on-site initialisation via magnet or remote initialisation via process control system
Non-contact, wear-free travel measurement
Communication interface 24V
Optional with integrated 3/2-way solenoid valve
Retrofittable
IP65 compliant
Housing made of reinforced polyamide

Inductive feedback sensor for manually operated valves

Inductive proximity sensor
For thread ends M12x1
Adjustable
For open and closed valve positions

Inductive feedback sensor for pneumatically actuated valves

Inductive proximity sensor
For thread ends M12x1
Retrofittable
For open and closed valve positions

Electrical feedback unit SK.500

Red optical status indicator
Retrofittable
Can be combined with mechanical stroke limit
Stainless steel housing

Solenoid valves

Joyner solenoid valve MH 311015

Joyner solenoid valve MH 311015

Anodised aluminium housing
24V DC
IP65

Electropneumatic positioners

Schubert & Salzer 8049

Eckardt SRI 986-BIDS/EAA

Schubert & Salzer 8049

Compact design, can be directly mounted onto actuator
Input: 4–20mA
Stroke: 3–50 mm
IP65
Optional ATEX layout also available

Eckardt SRI 986-BIDS/EAA

Mounting on linear actuator according to NAMUR
Stroke: 8–100 mm
Input: 4–20mA
IP54
ATEX certification

Mechanical stroke limit

Mounted onto pneumatic piston actuator

In combination with electrical feedback unitSK.500

In combination with intelligent feedback unit SK-i LED

Mounted onto pneumatic piston actuator

Stroke limit in open direction
Continuously adjustable
With red position indicator
Retrofittable without adaptor

In combination with electrical feedback unitSK.500

Stroke limit in open direction
Continuously adjustable
With red position indicator
Retrofittable

In combination with intelligent feedback unit SK-i LED

Stroke limit in open direction
Continuously adjustable

Additional accessories

Bonnets with Ingold sockets

Locking device

Shut-off cover

Bypass bonnet for temporary fluid bypass

Bonnets with Ingold sockets

Material 1.4404
Material certificate 3.1/EN 10204
Sealing to body with an o-ring
EPDM o-ring

Locking device

Manual valve with intermediate piece in stainless steel and padlock

Shut-off cover

Material 1.4435
Material certificate 3.1/EN 10204
O-ring between free-flow cover and body
EPDM O-ring (FDA)
Shut-off cover with EPDM diaphragm (FDA)

Bypass bonnet for temporary fluid bypass

Material 1.4435
Material certificate 3.1/EN 10204
PTFE bypass barrier (FDA)

Custom solutions

In addition, individual welded configurations or mini fittings are available as custom solutions.

Mini-fittings are available up to nominal diameter DN 2 and have a high surface finish up to Ra 0,2µ .

Documentation

All documents downloadable and catalogue as flipbook (button on the right)

Catalogue

SISTO-C catalogue
download
Flyer SISTO-C diaphragm valves
download
Flyer SISTO-CSPV topworks for secure sampling
download
Flyer SISTO-SK-i LED Intelligent feedback unit
download
Operating Manual SISTO-SK-i LED
download
Type series booklet SISTO-SK-i LED
download