Flanged Connection with Flush Diaphragm

One-piece seal design bolts directly to process flange
Flush-mounted diaphragm prevents clogging of process media
Used in applications with difficult media such as machine building and automation

Responsive after-sales service / Customizable /
High quality / One-year warranty
The image is for reference; the actual product willbe based on your custom specifications.

Description

The DIF-F features a one-piece flanged seal that mounts directly onto process flanges, providing a robust and reliable pressure measurement interface. Its flush-mounted diaphragm design prevents clogging from viscous, particle-laden, or crystallizing media, making it ideal for machinery, automation systems, and challenging industrial processes.
This diaphragm seal is compatible with various pressure gauges and transmitters, supports multiple pressure ranges, and meets international flange standards (ANSI, JIS, DIN). With material options including 304/316L stainless steel, Hastelloy, Titanium, and more, the DIF-F performs excellently in high-temperature, high-pressure, and corrosive environments. It is an optimal pressure isolation solution for applications requiring a flat diaphragm, anti-clogging performance, and easy maintenance.

Specifications

Type of process connection	ANSI/ASME B16.5, JIS, DIN 2527
Nominal diameter	1", 1 1/4", 1 1/2", 2", 3", 4"
Instrument connection	1/4, 3/8, 1/2 PT, G, NPT, M
Scale ranges	Pressure gauge: 1" ... 1 1/2": 0 ... 10 bar to 0 ... 40 bar 2" ... 4": -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 1/2": 0 ... 2.5 bar to 0 ... 40 bar 2" ... 4": -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 temperature	0℃ ... 80℃, 81℃ ... 200℃, 201℃ ... 400℃
Others	Welded with instrument, coating (PTFE or PFA), capillary, cooling element