The butterfly valve is used to control or shut off fluid by the valve disc. A Sanitary butterfly valve is different from an industrial butterfly valve, it normally uses high purity stainless steel 304 or 316L and the inside surface is well polished, not retain the fluid. Usually used in food processing and beverage, dairy, pharmaceutical industries.
DONJOY Sanitary butterfly valve uses stainless steel as the body material and disc, with SS304, SS316L.
Valve body and disc are integral forged processing and machining by CNC machines, stronger and better than casting.
10 bar, 150 psi, 1 Mpa, PN 10
Sanitary application requires better surface roughness, inside mirror polish treatment, roughness RA 0.8 μm default. (Mep Ra 0.6 μm, Eep Ra 0.4 μm ). Outside matt RA 1.2μm default.
It has two, three, four holes, three holes is the default and most commonly use.
The hole for the pull handle means the position, 3 holes means open, middle open, close, 3 positions.
Multi-position plastic handle
It has a plastic handle and 12 positions
Multi-position Stainless Steel Handle
It has a stainless steel handle and 12 positions
Multi-position Stainless Steel Handle Lockalbe
It has a stainless steel handle and 12 positions and could be equipped with a lock.
It’s fine-tuning handle and with dial
Pull handle with limit switch
The pull handle with the limit switch, sensor open and close position
Donjoy butterfly valve can meet 3A, SMS, DIN11850-1, DIN11850-2, ISO, RJT standards.
And we can produce the customized long weld end.
Weld end, tri-clover (clamp end), thread male/female(BSPT, BSP, NPT), flange PN10, PN16, square flange
Two-way butterfly valve
Three-way butterfly valve
· EPDM rubber (ethylene propylene diene monomer rubber)is a type of synthetic rubber that is used in many applications.
·Teflon(PTFE) Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications.
· Viton(FPM) Viton is a brand of FKM, a synthetic rubber and fluoropolymer elastomer commonly used in seals, chemical-resistant gloves, and other moulded or extruded goods.
· Silicone rubber is an elastomer (rubber-like material), usually used in the pharmaceutical industry.
· NBR Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile-butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene.
For more information, please check this article How to select O-ring seal for the sanitary valve.
Butterfly Valve Actuators
Actuators to realise automatic operation:
- NC operated: single-acting, normally closed (fail closed)—air to open, spring to close
- NO operated: single-acting, normally open (fail open)—air to close, spring to open
- AA operated: double-acting, air to open, air to close
pneumatic stainless steel actuator (vertical type),
pneumatic aluminium actuator (horizontal type),
on/off type or intelligent regulating type
DC24V/ AC24V/ 110V/ 220V/ 50Hz/ 60Hz
Control Top C-TOP
Control top 1721 PNP version
Control top 1721 PNP version for single-acting 1 solenoid, input PNP 24V, output 2 positions, PNP 24V 4-20mA
Control top 1721 PNP version for double-acting 2 solenoid, input PNP 24V, output 2 positions, PNP 24V 4-20mA
Control top 1721 PNP version for three-acting 3 solenoid, input PNP 24V, output 4 positions, PNP 24V 4-20mA, used for mixproof butterfly valve
Control top 1721 ASI BUS 3.0 version
ASI BUS 3.0 version, maximum to control 62 units
Control top 1721 dcs version
Positioner IL-TOP-1831, RS485 0/4 – 20mA, input 0/4-20mA, single-acting and double-acting.
Positioner IL-TOP-1831-P, with feedback input 0/4-20mA, output 0/4 -20mA, single-acting and double-acting.
Positioner IL-TOP-1831-Pid, with process control 4-20mA/ PT100, single-acting and double-acting.
Feedback Top, F-Top-1553
F-Top-1553 PNP for the single-acting and double-acting vertical actuator, 3 positions, 4-20mA.
Sanitary Butterfly Valve for Powder Processing
Normally butterfly valve for liquid flow, if used for powder processing, we will recommend use powder butterfly valve or make a special smaller disc with less pressure, if regular butterfly valve use for powder, the gasket will be easily worn out.
Sanitary 3-pieces butterfly valve
Sanitary Manual Three-pieces butterfly valve is easy to maintain and install.
Double Seat Mixproof Butterfly Valve Type A
It with one disc, two seals
Double Seat Mixproof Butterfly Valve Type B
It with two discs, two seals
Stainless Steel Tri-clamp Butterfly Valve Packing Picture
Donjoy Technology CO., LTD as sanitary butterfly manufacturer in China. Founded in 1993, have more than 28 years of experience in producing hygienic butterfly valves, ball valves, diaphragm valves, shutoff valves, globe valves and angle seat valves and so on. Produced more than 3 million hygienic butterfly valves. It’s the best choice for you to buy a sanitary butterfly valve from China.
Donjoy Hygienic Butterfly Valve Advantage
Direct factory sales, get the wholesale price of the butterfly valve.
Provide OEM service for butterfly valves with your own brand.
Great quality, supply for brands Unilever, P&G, Budweiser, Coca Cola, Nestle…
Sanitary valves have 3-A certified, FDA 21 CFR177.2600, CE PED 2014/68/EU and MD-06/42/EC