- 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
Flanged Connection with Corrosion-resistant Plastic
Model: DIF-P
- 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
- Product images are for reference only. Final specifications are based on the confirmed order.
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) |
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