No. Its double-seal design is integrated into a single disc with a leakage chamber. For independent disc actuation, the VEOX valve should be considered.
Double Block and Bleed
Leak Detection
PFA or Elastomer Diaphragm
Chamber Cleaning
Detectable leakage between two seals
The NEOS features a double-seal plug design and a leakage chamber to reliably detect seal failure, distinguishing it from twin-independent plug valves like the VEOX. The diaphragm/PFA configuration is engineered specifically for clean-in-place (CIP) applications, while the EPDM or FKM elastomer options extend operational capability to media with high particulate loads, depending on process characteristics. An integrated micro-flush valve cleans the leakage chamber while the main valve remains closed. Proper valve selection must account for process media, CIP cycles, differential pressures, and leak detection monitoring.
Observable leakage
The leak detection port enables quick identification of seal failures and guides maintenance interventions.
Two distinct variants
PTFE diaphragm with a PFA floating seal or elastomeric sealing, each engineered with distinct operating limits.
Closed-valve flushing
A micro flush valve can supply cleaning fluid to the chamber without opening the main valve.
Integrated Control
The Sorio control unit can operate both the primary valve and micro-valves when paired with the appropriate pneumatic configuration.
Compare specifications before selecting
The NEOS diaphragm/PFA and the NEOS elastomer are engineered for different operating conditions. Their performance ratings are not interchangeable.
Sealing and Leak Detection
Diaphragm and PFA
The floating PFA seal and PTFE diaphragm should be evaluated for CIP systems and external atmospheric isolation.
Elastomer Version
EPDM or FKM seals are specifically recommended for media containing particulate matter, subject to process compatibility.
Indicator and Flushing
A leak indicator and a micro-flush valve serve distinct functions. The total number of solenoid valves depends on your specific system configuration.
Technical Reference Points
Materials and Dimensions
Body and shut-off components engineered in 316L stainless steel. Our current product lineup features SMS, DIN, and US standards, including US sizes ranging from 1 to 4 inches.
Diaphragm / PFA Operating Limits
The catalogue rates this product for up to 8 bar within a temperature range of 5 to 110 °C. The pressure-temperature rating must be confirmed for your specific application.
Elastomer Limits
The catalogue specifies ratings up to 6 bar and from 5 to 90 °C, depending on the seal selected. The differential pressure across the valve must remain below 1 bar. Always verify the pressure/temperature limits for your specific operating conditions.
Planning a replacement? VAMECA helps you determine the exact model, sealing solution, and sub-assemblies required. With just a part number and a few photos, our technical experts can initiate verification directly with DEFINOX.
OPERATION AND DOCUMENTATION
Schedule Leak Detection and Cleaning Services
An effective leakage chamber must be accessible, properly controlled, and integrated into the CIP cycle.
Distinguishing Valve Functions
The main valve, leak indicator, and flush micro-valve require a tailored operating sequence. Please specify the existing control top and communication protocol.
Outline each phase
Please provide the temperature, duration, concentration, and pressure parameters for your CIP cycles. Note that peak sterilization limits should not be interpreted as continuous operating conditions.
Identify Installed Variant
Photograph the nameplate, indicators, valve body, and end connections. The presence of a diaphragm and the seal material directly determine the required replacement parts.
Your DEFINOX Project, Supported by VAMECA
Whether you need complete valves or replacement parts, we work with you to specify exactly what to order. You have a dedicated representative in Quebec and across Canada for technical validation, pricing, lead times, and order tracking. Get started with the information below.
VARIANT
PFA or Elastomer
Equipment part numbers and photos, existing gaskets and seals, diaphragm specifications, and number of indicators.
PROCESS
Media and Cleaning
Particulate matter, CIP chemicals, concentration, temperature, and cycle duration.
PRESSURE
Both sides of the valve
Upstream pressure, downstream pressure, and maximum differential pressure during each sequence.
ASSEMBLY
Valve Bodies and Automation
Diameter, standard, connection type, body cavity flushing, and required actuation.
Additional Solutions for Your Process
Compare features and optimize your process installation with other DEFINOX product lines.
DUAL-PLATE CHECK VALVES
DEFINOX VEOX
Two independent check valves and a leakage chamber designed to isolate circuits.
Discover VEOX →
FLAPPER VALVE ISOLATION
DEFINOX DCX3
A single-seat check valve engineered for reliable isolation of sanitary process lines.
Discover the DCX3 →
CONTROL AND INDICATION
Sorio Housings
Pneumatic actuation, position feedback, and seamless integration with your automated systems.
Discover Sorio →
FAQ