Aseptic Diaphragm Tank Valves

Technical Basics

Features:

• Tank body machined from a solid bar stock material

• Material 1.4435/316L ASME/ BPE

• Other alloy options available as specified

• Minimized dead leg and internal sump

• Suitable for mounting with SED Steripur Series and KMA Series Actuation

• Optional manual operation via an extended crankshaft stem

The SED Tank Bottom Valve is designed for applications in the aseptic process industry offering a pocket-free interior surface, minimized sump, eliminating entrapment areas and minimizing flow resistance thus reducing the potential for process contamination.

The SED tank bottom valve incorporates the same features and performance of a standard diaphragm valve utilizing the same valve components for a flush mounted tank bottom valve or side mounted tank and sample valve. The tank valve body is machined as standard from solid bar stock material 1.4435/316L ASME/BPE and other alloy materials are available according to the specification.

The standard design offers one valve port outlet. There are a number of different options available for sampling, sterilization and multi-outlet configurations that are standard in the SED product range of customized solutions. It is preferred to weld in the tank valve directly in the vessel. Mounting the valve directly to the tank minimizes the hold up volume, the most important criteria for this application. If removal of the tank valve from the tank is required, versions are offered with flange or clamp connections. Please consult an SED technical representative for these options.

Tank bottom valves are typically used for tank discharge, draining, sampling, cleaning and/or sterilizing, rinsing and isolation of down stream processing. The outlet port of the tank valve is available with all butt weld tube end standards (see fold-out page 15), aseptic clamp, screw connection (see page 16 and 17) or other special ends. The size range available is the same as the two-way valve.

Specification Tank Valves

On request, all dimensional data sheets or 2D and 3D - CAD drawings are available.
The following two pages show a table of some examples of standard and customized designs of tank diaphragm valves. These include options for sampling, sterilization, and multi-outlet configurations.

Description	P&ID	Image
1) BT 1x Valve port Standard tank bottom body Tank body for the tank bottom
2) 1x Valve machined from bar stock BZL 3/1 With one welded valve tank side left BZR 3/1 With one welded valve tank side right BXL 3/1 With one welded valve outlet left BXR 3/1 With one welded valve outlet right BW 4/1 With one welded valve tank side left and one welded valve outlet right
		For all options the welded valve is rotated into the self draining position and extended to eliminate interference with the tank bottom
3) BZR 3/2 1x Main Valve 1x Sample valve tank side right Like position 2 but includes an integral sample valve tank side. Right side and left side options are available and are fully drainable.
4) BXL 3/2 1x Main Valve 1x Sample valve outlet left Like position 2 but includes an integral outlet valve. Right side and left side options are available and are fully drainable.
5) BW 4/3 1x Main Valve 1x Sample valve tank side right 1x CIP/ SIP cleaning outlet valve left Like position 2 but includes integral valves that are fully drainable.
6) BT 3/1 1x Main valve 2x Outlet port for loop installation or as two access ports
7) BT 5/4 4x Main valves 1x Port Application with 4 internal tank partitions.
8) BU 1x Tank side sample valve All previous position options are available with the tank side sample valve. Machined welding pad to match the radius of the tank diameter.
9) BF Customized for aseptic modular retainer mounted in aseptic piping installations.