Valves - tank valves

Zero dead leg valves

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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 type	Flush
Outlet connections	Buttweld, Sanitary flange
Max. operating pressure	17 bar
Max. operating pressure	250 psi
Compatible actuators	Compact pneumatic, Fail closed, Fail open, Manual
Compatible diaphragms	EPDM, PTFE, Silicone, Silicone plus, Viton
Surface finish options	Electropolished, 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)
Certification and compliance	ISO 9001
Standards	ASME BPE, CE-PED

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

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 type	Flush
Flow rate	10.2 - 643 l/m
Flow rate	2.7 - 170 USGPM
Sizes	0.5", 0.75", 1.0", 1.5", 2.0", 3.0", 4.0"
Outlet connections	Buttweld, Sanitary flange
Max. operating pressure	17 bar
Max. operating pressure	250 psi
Operating temperature range	-51 to 177 °C
Operating temperature range	-60 to 350 °F
Compatible actuators	Compact pneumatic, Fail closed, Fail open, Manual
Compatible diaphragms	EPDM, PTFE, Silicone, Silicone plus, Viton
Surface finish options	Electropolished, 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)
Certification and compliance	ISO 9001
Standards	ASME BPE, CE-PED
Weight	0.45 - 2.73 kg
Weight	1 - 6 lbs

Temperature range depends on diaphragm material.

Zero dead leg valves 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

Material

Hastelloy C22, Stainless steel 316L, Stainless steel AL-6XN

Literature

Brochures

ASEPCO weirless radial diaphragm valves (US).pdf
PDF - 605.5kb

Datasheet

Zero Dead Leg Valves datasheet (US).pdf
PDF - 453.8kb

Manuals

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

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" to 1.5" sizes