Reliable Flow Protection for Hygienic Process Systems
bio-plus® Non-return Valves help protect process lines by allowing media to flow in one direction while preventing backflow. The range is suitable for gases and liquids and is available in multiple valve designs, connection types, materials, gasket options, and opening pressure configurations.
Key Product Highlights
Suitable for
gases
and liquids
Prevents reverse
flow in
process lines
Multiple
non-return valve
designs available
Weld-end and
clamp connection
options
Product-contact
parts marked
for traceability
Standard
opening pressure
of 0.2 bar
Electropolished
product-contact
surfaces
FDA, USP Class
VI and TSE-free
gasket option
Spare part
and protection
options available
Special opening
pressures available
on request
Available Non-return Valve Types
2 flange connection for compact disc valve
designs on request
Technical Snapshot
| Specification | Details |
|---|---|
Product range |
Ball, disc, magnetic disc, eccentric ball, membrane, and compact disc non-return valves |
| Standard sizes | DIN04–DIN150, ISO06–ISO150, OD ¼"–OD6 |
Product-contact housing material | 1.4435 BN2 / 316L |
| Closing element | PTFE closing ball / closing cone, depending on valve type |
| Spring material | 1.4401 |
| Membrane material | EPDM |
| Special materials | 2.4602, Titanium, 1.4539, etc. |
Gasket options | EPDM, FEP/Silicone, FKM, special gasket materials |
| Surface finish | Electropolished Ra < 0.6 µm |
| Media | Gases and liquids |
Standard opening pressure | 0.2 bar |
Special opening pressure | 0.036 to 3.0 bar on request |
Documentation | EN 10204 / 3.1 |
Compliance | FDA conform, USP Class VI, TSE-free |
Size and Pressure Overview
Materials and Surface Quality
-
Product-contact housing in 1.4435 BN2 / 316L
-
PTFE closing ball or closing cone, depending on valve type
-
EPDM membrane for membrane valve versions
-
Spring in 1.4401
-
Special materials available on request
-
Product-contact surfaces electropolished to Ra < 0.6 µm
-
Non-product-contact surfaces electropolished to Ra >1.6 µm
-
Product-contact parts marked with article number, material, and heat number
Gasket Material Options
EPDM
-40°C to +150°C
FEP / Silicone
-60°C to +200°C
FKM
available based on
configuration
PTFE
-195˚C to +260˚C
Special gasket materials
available on request
Valve Variant Overview
We offer valves that are suitable for Oxygen O2 plants, can we insert this option
Magnetic Disc Non-return
Valve L-design
Spare Parts and Maintenance Support
Spare Part
-
Spare part set for ball non-return valve
-
Spare part set for disc non-return valve
-
Spare part set for magnetic disc non-return valve
-
Spare part set for magnetic disc L-design valve
-
Spare part set for eccentric ball non-return valve
-
Spare part set for membrane non-return valve
-
Spare part set for compact disc non-return valve
Typical Spare Part
Set Components
-
Closing ball or closing disc
-
Spring
-
Support flange
-
O-ring
-
Internal part with gasket, depending on valve type
Applications
How to Order bio-plus® Non-return Valves
The bio-plus® Process Hoses and Assemblies and Orifices range can be selected based on connection type, pipe standard, nominal size, material, gasket option, and surface finish Special requirements, if any. liquitec can support customers in selecting the right configuration for their process application.