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SJ Gauge cell-type sandwich diaphragm seal

Flanged Connection, Cell (Pancake) Diaphragm

Model: DIF-C
  • Instruments are connected via a side capillary connection and it is an ideal seal for transmitters or DP transmitters
  • Be mounted between an open process flange and an optional cover flange
  • Used for contaminated, solidifying, hot, or highly viscous media
  • An alternative with high compatibility and corresponding specifications to the WIKA 990.28
  • Responsive after-sales service / Customizable
  • High quality / One-year warranty
  • Product images are for reference only. Final specifications are based on the confirmed order.
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Description

The DIF-C Cell (Pancake) Diaphragm Seal is designed for pressure transmitters and DP transmitters, using a side capillary connection for reliable signal transmission. It is installed between an open process flange and an optional cover flange, making it ideal for contaminated, solidifying, hot, or highly viscous media. With a wide range of materials available for both the body and diaphragm, the DIF-C provides excellent corrosion resistance and process durability.

It also serves as a highly compatible alternative to the WIKA 990.28, offering equivalent specifications for demanding industrial applications such as chemical processing, petrochemical systems, sludge tanks, and heavy-duty pipelines.

Downloads

English

SJ-Gauge-DIF-C-diaphragm-seal-datasheet-en

Traditional Chinese

SJ-Gauge-DIF-C-diaphragm-seal-datasheet-zh-tw

Specifications

Type of process connectionANSI/ASME B16.5, JIS, DIN 2527
Nominal diameter1 1/2", 2", 3", 4"
Instrument connection
  • 1/4, 3/8, 1/2
  • PT, G, NPT, M
Scale ranges
  • Pressure gauge:
  • 1 1/2": 0 ... 6 bar to 0 ... 40 bar
  • 2": -1 ... 3 bar, 0 ... 4 bar to 0 ... 40 bar
  • 3", 4": -1 ... 1.5 bar, 0 ... 0.6 bar to 0 ... 40 bar
  • Transmitter:
  • 1 1/2": 0 ... 2.5 bar to 0 ... 40 bar
  • 2": -1 ... 0.6 bar, 0 ... 0.25 bar to 0 ... 40 bar
  • 3", 4": -1 ... 0.6 bar, 0 ... 0.1 bar to 0 ... 40 bar
  • Cell-type with an extended diaphragm
  • Pressure gauge:
  • 1 1/2": 0 ... 4 bar to 0 ... 40 bar
  • 2": -1 ... 3 bar, 0 ... 4 bar to 0 ... 40 bar
  • 3", 4": -1 ... 1.5 bar, 0 ... 0.6 bar to 0 ... 40 bar
  • Transmitter:
  • 1 1/2": 0 … 2.5 bar to 0 ... 40 bar
  • 2": -1 ... 0.6 bar, 0...0.25 bar to 0 ... 40 bar
  • 3", 4": -1 ... 0.6 bar, 0 ... 0.1 bar to 0 ... 40 bar
  • or all other equivalent vacuum or combined pressure and vacuum ranges
Material
  • Body:
  • 304 SS, 316 SS, 316L SS, dual phase steel, Hastelloy C276, Tantalum, Titanium, Monel 400, Nickel 200
  • Diaphragm:
  • 316L SS, Hastelloy C276, Tantalum, Titanium, Monel 400, Nickel 200
Medium temperature0℃ ... 80℃, 81℃ ... 200℃, 201℃ ... 400℃
OthersWelded with instrument, coating (PTFE or PFA), capillary, cooling element, spacer

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