Type 371 Valve Body, 1 Outlet, for Mounting on NovAseptic NAC
Weld-end valve body data sheet
NovaSeptic nomenclature and configurator
NovAseptic valves are renowned for their performance, reliability, longevity and ease of maintenance. The design and development of each component draw on more than 35 years of experience focused on aseptic design. NovAseptic valves comply with the design qualification criteria established by current GMP (Good Manufacturing Practice) for aseptic processes. This is why we have chosen to describe these valves as aseptic by design.
The range was originally developed to address the challenges of tank bottom valves: no dead zone, self-draining and fully drainable, low pressure drop, the smallest possible weld-in flange diameter to bring the agitator closer to the centre of the tank, very simple maintenance since this valve is generally not accessible, diaphragms suited to the materials of pharmaceutical process tanks, and compact or right-angle actuators. This design was then extended to 2-way or 3-way valves, offering an aseptic alternative to the in-line diaphragm valve.
The range is modular. NovAseptic valve bodies are available in imperial sizes, from 1/2″ to 3″. On each body configuration with the same process connection diameter, all diaphragms, actuators and accessories of that same size can be fitted.
2-way 90° shut-off body, TC connectable, NAC mounting, weld outlet, DN25 and DN38
NovAseptic valve body for NAC mounting, 2-way configuration, 90° shut-off, 1 weld outlet, NAC mounting. Aseptic design with no dead zone, drainable. Electropolished body with Ra below 0.38 µm, several stainless steel grades. Process pressure -1 to 7 bar. TC connectable. Catalogue references NA##/371-211 and NU###/371-211. EN 10204-3.1 certificate, ATEX version available.
NAC-mounted body, aseptic connection
Type 371 is a 2-way valve body with 90° shut-off, designed for mounting on NAC, the NovAseptic aseptic connection. The outlet is weld-end (BW) and the body can be connected via TC. It provides shut-off and flow on an aseptic line connected to a NAC assembly.
NAC mounting combines the valve body with the NovAseptic aseptic connection, for a connection that can be dismantled without loss of asepsis. The 90° shut-off directs the flow while retaining the drainability and absence of dead zones that characterise the range.
The weld outlet provides a permanent connection on the process side, while the TC connection allows dismantling on the NAC side. This is the basic configuration for 2-way valves on NAC.
Nominal dimensions
Nominal dimensions in millimetres, as per the body data sheet. A bore diameter, B and C overall dimensions, TCi and TC connection diameters. SMS 3008 (NA) and ASTM A269/270 (NU) tubes available.
| Dimension | A (mm) | B (mm) | C (mm) | TCi (mm) | TC (mm) |
| DN25 (1″ tube) | 33,9 | 58,3 | 50,0 | 60,5 | 77,5 |
| DN38 (1½” tube) | 43,8 | 75,0 | 60,0 | 72,0 | 91,0 |
The thread connecting to the actuator is NovAseptic-specific, not standard. The process connection is weld-end or TC depending on the configuration.
Body and specifications
| Characteristic | Value |
| Catalogue references | NA##/371-211 and NU###/371-211 |
| Configuration | 90° shut-off, TC connectable |
| Outlet | Weld-end (BW), 90° shut-off |
| Installation | On NAC, NovAseptic aseptic connection |
| Body grades | 316L, 1.4435 BN2, 904L, AL6XN, Hastelloy C22 |
| Tubes | SMS 3008 (NA) or ASTM A269/270 (NU) |
| Surface finish | Ra below 0.38 µm, electropolished |
| Process pressure | -1 to 7 bar |
| Certificate | EN 10204-3.1 |
| ATEX | Available |
Compatible diaphragms
The body accepts the four diaphragms in the range, all FDA and USP Class VI, to be chosen according to the fluid and operating temperature.
| Diaphragm | Type | Compliance |
| EPDM | 22 | FDA and USP Class VI |
| FKM Viton | 24 | FDA and USP Class VI |
| PTFE | 25 | FDA and USP Class VI |
| Silicone | 26 | FDA and USP Class VI |
The type 25 PTFE diaphragm requires the type 84 interface.
Compatible actuators and accessories
The body can be operated by all actuators in the range, from manual to ATEX pneumatic, in the corresponding diameter.
| Actuator or accessory | Type |
| Manual, stainless steel base, plastic handle | 150 |
| Manual, all stainless steel, autoclavable | 170 |
| Manual, disengageable | NA12 170 |
| Manual with right-angle drive | 180 |
| Pneumatic NC, all stainless steel | 110 |
| Pneumatic NC, plastic, stainless steel base | 111 |
| Pneumatic NO, all stainless steel | 100 |
| Pneumatic double-position, all stainless steel | 140 |
| Pneumatic NC, all stainless steel, ATEX | AX110 |
| Inductive limit switch box | PA1251 |
| ATEX inductive limit switch box | PA11-SEV |
| Interface for PTFE diaphragm | 84 |
Frequently asked questions
What is NAC mounting?
NAC, NovAseptic Aseptic Connection, is the range’s aseptic connection. Mounting the valve body on NAC allows a connection that can be dismantled without loss of asepsis, with a TC connection on the connection side.
Which body grade should I choose?
316L covers most pharmaceutical processes. Grades 1.4435 BN2, 904L, AL6XN and Hastelloy C22 meet the needs of more aggressive or more chlorinated fluids, in order of increasing corrosion resistance.
Which diaphragm and which actuator?
All diaphragms and actuators of the same diameter can be fitted on this body. The diaphragm is chosen based on the fluid and temperature, the actuator based on the control mode and zone classification.