Diaphragm Seal - 2" 300# Flanged Flush Face
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FLANGED FLUSH FACE DIAPHRAGM SEALS - 2" 300#
2" 300# Flanged Flush Face Diaphragm Seal
The 2" 300# Flanged Flush Face Diaphragm Seal is a one-piece, all-welded diaphragm seal designed for where continuous flow of process media across the diaphragm is required. The flush-face design ensures continuous flow of process media across the diaphragm, preventing solids buildup, eliminating dead spaces, and providing reliable isolation for your pressure measurement instruments.
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SPECIFICATIONS
Process connection: 2" flange, 300# rating (ASME B16.5)
Instrument connection: 1/2" NPT female (standard), 1/4" NPT available
Construction: One-piece, all-welded
Process Temperature range: -110° to 750°F (dependent on fill)
Pressure rating: See pressure rating chart below
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MATERIAL OPTIONS
Wetted parts:
- 316/316L Stainless Steel
- Hastelloy C-276
- Monel 400
- Other alloys available on request
Diaphragm material:
- 316/316L Stainless Steel
- Hastelloy C-276
- Tantalum
- Monel
- Other alloys available on request
Fill fluid
- Silicone DC200
- Glycerin
- High-temperature and other fills available
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COMPATIBLE INSTRUMENTS
This seal can be mounted and filled with:
- Mechanical pressure gauges (Bourdon tube)
- Digital pressure gauges (LILLYpress, others)
- Pressure transmitters (Jaron Wolff, Armano, Wika, others)
Need it mounted and filled? Select your instrument from the data sheet and we'll deliver a ready-to-install assembly.
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WHY ORDER FROM JARON WOLFF
✓ 40+ years of pressure instrument expertise
✓ Mount and fill service — receive your seal already integrated with your instrument
✓ NIST-traceable calibration certificates available
✓ Ships across Canada and the United States
✓ Technical support for material selection and configuration
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RELATED PRODUCTS
- Flanged Flush Face Diaphragm Seals | All Sizes & Ratings
- Diaphragm Seals
- Mechanical Pressure Gauges | Digital Pressure Gauges
- Pressure Transmitters
- Diaphragm Seal Mounting Services
Need help selecting the right configuration? Contact our team for application support.
Minimum Recommended Pressure Ranges
| Flange Size | 1-1/2″ | 2″ | 3″ & 4″ |
| 2.5″ & 3.5″ Gauges | 30 psi | 15 psi | 15 psi |
| 4″, 4.5″, & 6″ Gauges | N/A | 60 psi | 30 psi |
| Transmitter (Gauge Pressure) | 10 psi | 100 “H2O | 30 “H2O |
| Transmitter (Differential Pressure) | N/A | 150 “H2O | 30 “H2O |
Maximum Working Pressure
- Determined by ANSI B16.5 flange ratings.
Data Sheet
Installation Instructions
Download Installation Instructions: