Flanged Connection with Stub Pipe, Upper Metal, Lower Plastic
- Enlarged upper seat and diaphragm to enhance accuracy and meet the requirements for pipeline connections
- The material of diaphragm or dual diaphragm can be different from the main body
- Ideal for industries such as electroplating, chemical and petrochemical processing, etc.
- 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-USLP diaphragm seal features a metal upper body combined with a plastic lower chamber, making it ideal for corrosive or contaminated media in chemical processing, electroplating, and petrochemical applications. The upper section is available in stainless steel, Hastelloy C276, Titanium, Tantalum, and other high-performance alloys, while the lower section offers PP, PVC, PVDF, or PTFE for excellent corrosion resistance and reduced weight. Its enlarged upper seat and diaphragm improve pressure transmission accuracy and ensure compatibility with various piping standards. Supporting both pressure gauges and transmitters, the DIF-USLP accommodates multiple diaphragm sizes (70–160 mm) and international flange standards (ANSI, JIS, DIN). It is especially suitable for acidic/alkaline solutions, wastewater treatment, plating liquids, and aggressive chemicals, with optional welded-type construction and PTFE/PFA coating for easier maintenance and extended durability.
Specifications
| Type of process connection | ANSI/ASME B16.5, JIS, DIN 2527 |
|---|---|
| Nominal diameter | 1/2", 3/4", 1", 1 1/4", 1 1/2", 2" |
| Diaphragm diameter | 90 mm, 130 mm, 160 mm |
| Instrument connection | 1/4", 3/8", 1/2" PT, G, NPT, M |
| Scale ranges | 90 mm Pressure gauge: -1 … 1.5 bar, 0 ... 0.6 bar to 0 … 10 bar Transmitter: -1 … 0.6 bar, 0 ... 0.1 bar to 0 … 10 bar 130 mm Pressure gauge: -1 ... 0.6 bar, 0 … 0.25 bar to 0 … 10 bar Transmitter: -1 … 0.6 bar, 0 ... 0.1 bar to 0 … 10 bar 160 mm Pressure gauge: -0.1 … 0.1, 0 ... 0.1 bar to 0 … 10 bar Transmitter: -0.05 … 0.05 bar to 0 … 10 bar or all other equivalent vacuum or combined pressure and vacuum ranges |
| Material | Upper body: 304 SS, 316 SS, 316L SS, Dual Phase Steel, Hastelloy C276, Tantalum, Titanium, Monel 400, Nickel 200 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) |
| Case filling | PFPE, silicone oil |
| Others | Welded with instrument, coating (PTFE or PFA) |