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SJ Gauge metal diaphragm seal with flanged process connection

Flanged Connection

Model: DIF
  • Screw type or welding type can be selected according to size requirements
  • Used for sewage or fluids with difficult properties such as corrosive, high temperature, or crystallization
  • Applicable for strict working environments including pharmaceuticals, chemical and petrochemical processing, etc.
  • 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 flanged diaphragm seal is available in both welded and screwed types, allowing flexible selection based on installation size and process requirements. It is designed for challenging media such as corrosive fluids, high-temperature liquids, crystallizing substances, and sewage, making it ideal for demanding industries including pharmaceutical, chemical, and petrochemical applications. Compatible with ANSI/ASME, JIS, and DIN flange standards, it can be paired with pressure gauges or transmitters. With a wide choice of materials—304/316L, Hastelloy, Monel, Titanium, Tantalum, and more—the DIF provides a dependable pressure isolation solution for harsh operating environments.

Product Images

Pressure transmitter with flange connection, diaphragm seal
Pressure transmitter with flange connection, diaphragm seal
Flanged Connection Diaphragm Seal
Flanged Connection Diaphragm Seal
Flanged Connection Gauge
Flanged Connection Gauge

Downloads

English

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

Traditional Chinese

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

Specifications

TypeWelded, screwed
Type of process connectionANSI/ ASME B16.5, JIS, DIN2527
Nominal diameter
  • Welded:
  • 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
  • Screwed:
  • 2", 3", 4"
Instrument connection
  • 1/4, 3/8, 1/2
  • PT, G, NPT, M
Scale ranges- welded
  • Pressure gauge:
  • 1/2", 3/4": 0 ... 4 bar to 0 ... 40bar
  • 1", 1 1/4": -1 ... 3 bar, 0 ... 2.5 bar to 0 ... 40 bar
  • 1 1/2", 2": -1 ... 1.5 bar 0 ... 1.6 bar to 0 ... 40 bar
  • Transmitter:
  • 1/2", 3/4": 0 ... 0.3 bar to 0 ... 40bar
  • 1", 1 1/4": -1 ... 0.6 bar, 0 ... 0.25 bar to 0 ... 40 bar
  • 1 1/2", 2": -1 ... 0.6 bar, 0 ... 0.1 bar to 0 ... 40 bar
  • or all other equivalent vacuum or combined pressure and vacuum ranges
Scale ranges - screwed
  • Pressure gauge:
  • -1 ... 1.5 bar, 0 ... 0.6 bar to 0 ... 40 bar
  • Transmitter:
  • -1 ... 0.6 bar, 0 ... 0.25 bar to 0 ... 40 bar
  • or all other equivalent vacuum or combined pressure and vacuum ranges
Material
  • Body:
  • 304 SS, 316 SS, 316L SS, Hastelloy C276, Dual phase steel, Tantalum, Monel 400, Titanium, Nickel 200
  • Diaphragm - welded:
  • 316L SS, Hastelloy C276, Tantalum, Monel 400, Titanium, Nickel 200
  • Diaphragm - screwed:
  • 316L SS, Hastelloy C276, Tantalum, Monel 400, Titanium, Nickel 200, Silicone, Viton, 316L+PTFE, 316L+PTFE Coating, PTFE
Medium temperature0°C ... 80°C, 81°C ... 200°C, 201°C ... 400°C
OthersWelded with instrument, flush port, coating (PTFE, PFA), lining (metal or PTFE), capillary, cooling element

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