Flanged Connection with Corrosion-resistant Plastic

The all-plastic material design is lightweight and can effectively measure acidic and alkaline media
Excellent for paint, electroplating, sewage treatment and the paper industry

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-P is a lightweight, fully plastic flanged diaphragm seal designed for measuring corrosive media such as acids and alkalis. It supports various flange standards (ANSI, JIS, DIN) and can be paired with pressure gauges or transmitters across a wide range of pressure settings. With PTFE or metal diaphragm options, the DIF-P is widely used in painting systems, electroplating tanks, wastewater treatment, chemical processing, and the paper industry. Its corrosion-resistant structure ensures durability and stable performance in demanding environments.

Specifications

Type of process connection	ANSI/ ASME B16.5, JIS, DIN2527
Nominal diameter	1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 3", 4"
Instrument connection	1/4, 3/8, 1/2 PT, G, NPT, M
Scale ranges - metal diaphragm	Pressure gauge: 1/2"、3/4"：0 ... 4 bar to 0 ... 10 bar 1" ... 1 1/4": -1 ... 3 bar、0 ... 1.6 bar to 0 ... 10 bar 2": -1 ... 1.5 bar、0 ... 0.6 bar to 0 ... 10 bar 3"、4"：-1 ... 0.6 bar、0 ... 0.6 bar to 0 ... 10 bar Transmitter: 1/2"、3/4"：0 ... 0.4 bar to 0 ... 10 bar 1" ... 1 1/4": -1 ... 0.6 bar、0 ... 0.25 bar to 0 ... 10 bar 2": -1 ... 0.6 bar、0 ... 0.1 bar to 0 ... 10 bar 3"、4"：-1 ... 0.05 bar、0 ... 0.05 bar to 0 ... 10 bar or all other equivalent vacuum or combined pressure and vacuum ranges
Scale ranges - PTFE diaphragm	Pressure gauge: 1/2"、3/4"：-1 ... 5 bar、0 ... 2.5 bar to 0 ... 10 bar 1" ... 1 1/4": -1 ... 1.5 bar、0 ... 1.6 bar to 0 ... 10 bar 2": -1 ... 0.6 bar、0 ... 0.6 bar to 0 ... 10 bar 3"、4"：-1 ... 0.6 bar、0 ... 0.1 bar to 0 ... 10 bar Transmitter: 1/2"、3/4"：-1 ... 3 bar、0 ... 0.4 bar to 0 ... 10 bar 1"...1 1/4": -1 ... 0.6 bar、0 ... 0.1 bar to 0 ... 10 bar 2": -0.05 ... 0.05 bar to 0 ... 10 bar 3"、4"：-0.05 ... 0.05 bar to 0 ... 10 bar
Material	Upper body: PP, PVC, PVDF, PTFE Lower body: PP, PVC, PVDF, PTFE Diaphragm: PTFE, Hastelloy C276, Titanium, Tantalum, Monel 400, Nickel 200, Silicone, Viton, 316L+PTFE, 316L+PTFE Coating
Medium temperature	0℃ ... 60℃ (PVC), 0℃ ... 80℃ (PP), -40℃ ... 120℃ (PVDF), -200℃ ... 240℃ (PTFE)