Valves - tank valves

Zero dead leg valves

Overview

ASEPCO Weirless Radial diaphragm™ Zero dead leg valve

Designed specifically to meet the stringent requirements of the bioprocessing industry Weirless Radial diaphragm tank valves offer solutions to the most challenging applications. It is easy to weld our valves truly flush to the bottom of your tank with our heavy‑duty, thick weld flange. There are no gaskets, bolts or seams.

Features and benefits

  • For use in situations where sampling, draining, transferring or directing fluid from a line is necessary
  • Designed to minimize hold-up in point-of-use applications
  • Completely eliminates any dead legs
  • Drains completely, because unlike other designs, our valves have no pockets
  • Eliminates hold up, because the tip of the diaphragm seals on the ID of the line tubing
  • Flush mount design, simple clamp assembly
  • CIP/SIP capable for easy, repeatable cleaning and sterilization

Technical summary

Mounting typeFlush 
Outlet connectionsButtweld, Sanitary flange 
Max. operating pressure17 bar
Max. operating pressure250 psi
Compatible actuatorsCompact pneumatic, Fail closed, Fail open, Manual 
Compatible diaphragmsEPDM, EPDM plus, PTFE, Silicone, Silicone plus, Viton 
Surface finish optionsElectropolished, Max 10 micro-inch Ra (0.25 µm Ra), Max 15 micro-inch Ra (0.375 µm Ra), Max 20 micro-inch Ra (0.5 µm Ra) 
CertificationISO 9001 
StandardsASME BPE, CE-PED 

Technical Summary table lists features available within the range. See ‘Technical specifications’ tab for model specific information.

Performance

Performance

Zero dead leg valve flow rates
Size Cv at 1 psi (0.07 bar)
inches LPM GPM
0.50 10.2 2.7
1.00 59.8 15.8
1.50 180 48
2.00 272 72
3.00 643 170

Specifications

Technical specifications

Zero dead leg valves
Mounting typeFlush 
Flow rate10.2 - 643 l/m
Flow rate2.7 - 170 usgpm
Sizes0.5", 0.75", 1.0", 1.5", 2.0", 3.0", 4.0" 
Outlet connectionsButtweld, Sanitary flange 
Max. operating pressure17 bar
Max. operating pressure250 psi
Operating temperature range-51 - 260 °C
Operating temperature range-60 - 500 °F
Compatible actuatorsCompact pneumatic, Fail closed, Fail open, Manual 
Compatible diaphragmsEPDM, EPDM plus, PTFE, Silicone, Silicone plus, Viton 
Surface finish optionsElectropolished, Max 10 micro-inch Ra (0.25 µm Ra), Max 15 micro-inch Ra (0.375 µm Ra), Max 20 micro-inch Ra (0.5 µm Ra) 
CertificationISO 9001 
StandardsASME BPE, CE-PED 
Weight0.45 - 2.73 kg
Weight1 - 6 lbs
Temperature range depends on diaphragm material.

Dimensions

Line Size* A B C D - with Manual Ac-tuator D - with Pneumatic Actuator
inches mm in mm in mm in mm in mm in
0.50 47.2 1.86 52.5 2.07 13.5 0.53 106.9 4.21 127.8 5.03
0.75 50.4 1.99 49.8 1.96 19.8 0.78 119.6 4.71 140.5 5.53
1.00 111.8 4.40 64.3 2.53 26.9 1.06 146.3 5.76 187.5 7.38
1.50 85.1 3.35 64.3 2.53 52.3 2.06 157.0 6.18 206.2 8.12
2.00 107.4 4.23 82.6 3.25 52.5 2.065 171.2 6.74 212.6 8.37
3.00 107.4 4.23 64.3 2.53 52.5 2.065 195.1 7.683 236.5 9.31

Weights

Size Valve Body Total Weight with Manual Actuator Total Weight with Pneumatic Actuator
inches lb kg lb kg lb kg
0.50 1.00 0.45 3.05 1.39 2.75 1.25
0.75 1.40 0.64 3.45 1.57 3.15 1.43
1.00 1.50 0.68 5.70 2.59 6.55 2.98
1.50 2.20 1.00 8.75 3.98 10.55 4.80
2.00 3.50 1.59 10.05 4.57 11.85 5.39
3.00 6.00 2.73 13.00 5.91 29.75 13.52

Materials of construction

MaterialAlloy C22, Alloy C276, Hastelloy, Stainless steel 316L, Stainless steel AL-6XN

Literature

Brochures

  1. ASEPCO valves (US).pdf
    PDF - 722.5kb

Datasheet

  1. ASEPCO zero dead leg valve datasheet.pdf
    PDF - 762.6kb

Manuals

  1. Tank valve manual (EN).pdf
    PDF - 2.4mb

Actuators

Actuators

The AKS actuator series** for tank valves is a durable, easy to maintain actuator made of a plastic housing and stainless steel diaphragm interface. The resulting actuator is a hygienic design which is GMP-compliant.

Our tank valve actuators are also available in the AJS actuator series an all stainless steel actuator providing all the same performance, but in a heavy-duty package.

Both versions offer manual and pneumatic options, are provided with laser-etched serial numbers for traceability, and carry a market-leading three year warranty. It is straightforward to add automation to the pneumatic versions by mounting switches or controllers from any manufacturer.

Work with all manufacturers linear switches and controllers (i.e. Westlock, Stonel, Burkert, etc.)

**AKS actuator series only available on 0.5-1.5" sizes

Diaphragms

Diaphragms

Multiple materials cope with virtually every temperature, pressure and chemical challenge in the food and biopharm industries.

Materials include:

  • Silicone
  • EPDM
  • Silicone plus
  • EPDM plus
  • Viton A
  • Viton A (steam resistant)
  • Viton GF
  • PTFE

All diaphragms are laser-etched with cure dates and batch numbers, ensuring that they are completely traceable.

Recommended Products

  1. EPDM and EPDM plus diaphragms

    EPDM and EPDM plus diaphragms

    EPDM diaphragms. Not suitable for use with solvents or petroleum agents. Parylene surface treated version available.

    Valves - diaphragms

  2. Viton diaphragms

    Viton diaphragms

    Excellent heat and chemical resistance. Not suitable for use with ketones and esters. Steam resistant version available.

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  3. PTFE diaphragms

    PTFE diaphragms

    Long-lasting, quick-change diaphragms. Extremely chemical and steam resistant. Only available for tank valves.

    Valves - diaphragms

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ASEPCO Weirless Radial diaphragm zero dead leg valve - the leading aseptic tank‑bottom valve.

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