Sanitary Pneumatic Operated Diaphragm Valves with Tri-clamp Ends

Sanitary Pneumatic Operated Diaphragm Valves with Tri-clamp Ends inquiry

Follow Us On

Sanitary Diaphragm Valves with Tri-clamp Ends, Pneumatic Type


AV-4PC series is a pneumatic type sanitary diaphragm valve with tri-clamp/tri-clamp ends, which is widely used in food, beverage, dairy, brewing, pharmaceutical industries, etc. It is excellent for flow control as well as for open/close duties.



Sizes available from 1" to 3" (1", 1 1/2", 2" 2 1/2", 3"), DN25-DN80 (DN25, DN40, DN50, DN65, DN80)

Valve body: AISI 316L.

Valve seat: EPDM+PTFE

Max. working pressure: 

  • Normally closed EPDM 87psi (6bar), PTFE 65psi (4.5bar) as default, Normally closed EPDM 116psi (8bar), PTFE 87psi (6bar) as option
  • Normally open and double action EPDM EPDM 116psi (8bar), PTFE 87psi (6bar) 

Actuator can be with plastic material or pure stainless steel material, NC/NO/AA type for choose from

Air supply port: G1/8"

Air supply pressure: 70-116psi (5-8bar)

Working temperature range: -22 ~ 266°F (-30 ~ 130°C), or higher upon request.

Inside treatment: Ra 16-32μin (0.4-0.8μm), Ra 25 (0.5μm) is the default.

Direct 2-way body.



End connection can be butt-welded, sanitary tri-clamp, thread.

Diaphragm can be pure EPDM or EPDM+PTFE

Inside surface treatment can be Ra 16μin (0.4μm).

The diaphragm valves can be with plastic pneumatic actuators or pure stainless steel actuators as below photos show, actuators can be NC/NO/AA operated for choose from

  •          NC operated: normally closed (fail closed)---air to open, spring to close
  •          NO operated: normally open (fail open)---air to close, spring to open
  •          AA operated: double acting---air to open, air to close


Valve body can be T type, U type or tank bottom type as below photo shows for choose from:

Technical Parameters

Steel material

Product wetted steel parts



Provided with material inspection report

Other steel parts

AISI 304

Seal material



All seal materials comply with FDA 21CFR117.2600




Working pressure

≤145psi (10bar)


Working temperature

-4 ~ 302°F (-30 ~ 150°C)

Surface treatment

Inside surface treatment

Ra 16-32μin (0.4-0.8μm), Ra 25 (0.5μm) is the default.

Outside surface treatment

Ra 32μin (0.8μm), Sand Blast or other upon request.


End connections can be butt-welded, sanitary clamp.


Normally Closed (NC) - Air to open and spring to close;

Normally Open (NO) - Air to close and spring to open;

Air to Air (AA) - Air to open, air to close.


In hygienic clean piping system, application of all diaphragm valves should meet the following standard installation angle for no residue. When installing the valve on long pipeline, we suggest declining the valve by 2% so as to ensure the completely self-emptying in the system.




Contact us for more information and best pricing.