Introduction:
A Diaphragm seal is a flexible membrane that seals and isolates an enclosure. the flexible nature of this  allows  effects to cross the barrier but not the material being contained.

Common uses for diaphragm seals are to protect  from the  whose pressure is being measured.

Materials
Metal diaphragms of stainless steel (several grades), Carpenter 20, Hastelloy, Monel, Inconel, tantalum, titanium and several other metals are in common use where high pressure ratings and specific chemical compatibility are required. Flanged assemblies or flush welded versions are available.

Application:

Diaphragm seals (also known as chemical seals or gauge guards) are also used to protect a process fluid from the pressure sensor. Examples of this use are:

• Sanitary processes (food, pharmaceuticals, etc.) where allowing process fluid to accumulate in the pressure port of the sensor would compromise the purity of the fluid (such as milk getting into the pressure port of a pressure gauge and spoiling)
• Very pure process fluids, where the metal surface of the pressure sensor might contaminate the fluid (such as copper ions from brass leaching into ultra pure water.)
•  systems where small changes in pressures must be eliminated, such as those controlling .
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Company Info:

Baoji Zhengqian Nonferrous Metals Co. Ltd is located in the nonferrous metal processing baseBaoji City, Shaanxi Province, China. Our company is a comprehensive enterprise, and we have integrated the processing production and developing sales of the refractory metal and non-ferrous metal materials.

Advanced production technology and modern production equipment have been applied to professionally manufacture tungsten, molybdenum, tantalum, titanium, nickel and their alloyed materials and exquisite-manufactured parts, such as sheet, bar, pipe, foil, wire, target and crucible in various specifications. Our productions are widely used in many fields, for instance, aircraft industry, petrochemical industry, metallurgy, rare earth, coating, instrumentation, LED, electronic equipment, solar PV and medical equipment.