1299 Diaphragm Seal System
SKU: 1299
Flanged / threaded diaphragm seal system that protects pressure / level / DP transmitters from corrosive, erosive, or extreme-temperature process media. Same isolation benefits as the 1199 family but with a streamlined model code, an 800-PSI threaded connection rating option, and a wider material variety. Mounts directly to flanged or threaded process connections — no separate mounting hardware required, reducing installation cost. Supports gauge, absolute, and DP transmitters; usable as a remote seal where physical size fits. SIL 2/3 third-party certified to IEC 61508.
Contact us for pricing on this product.
Flanged / threaded diaphragm seal system that protects pressure / level / DP transmitters from corrosive, erosive, or extreme-temperature process media. Same isolation benefits as the 1199 family but with a streamlined model code, an 800-PSI threaded connection rating option, and a wider material variety. Mounts directly to flanged or threaded process connections — no separate mounting hardware required, reducing installation cost. Supports gauge, absolute, and DP transmitters; usable as a remote seal where physical size fits. SIL 2/3 third-party certified to IEC 61508.
The Rosemount 1299 Diaphragm Seal System # 1299 is manufactured by Rosemount. Valley Instrument Service is an authorized Rosemount dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
Have questions about this product?
Our team can help with product selection, specs, pricing, and application support.
Contact Us or Call (661) 327-8681Configure Your Rosemount 1299 Diaphragm Seal System
Flanged / threaded diaphragm seal system that protects pressure / level / DP transmitters from corrosive, erosive, or extreme-temperature process media. Same isolation benefits as the 1199 family but with a streamlined model code, an 800-PSI threaded connection rating option, and a wider material variety. Mounts directly to flanged or threaded process connections — no separate mounting hardware required, reducing installation cost. Supports gauge, absolute, and DP transmitters; usable as a remote seal where physical size fits. SIL 2/3 third-party certified to IEC 61508.
Required Specifications
0 of 1 selectedSelect a measurement type to start building your part number.
Accessories, replacement sensors, and parts for this product family.
Related Products
319 Flushing Rings
Process-to-seal connection ring with integrated valves that lets you remove residue build-up from diaphragm seals WITHOUT disconnecting the seal from process flanges. Major reduction in maintenance downtime, labor cost, and parts management. Two design variants: Traditional (flow-through cleaning, sized to fit nearly any application, choice of ball / needle / gate valves) and Compact (cleans 5× faster over 30% more surface area, 50% fewer leak points than other flushing rings). Factory leak-tested — mount and use right out of the box. Used downstream of a 1199 / 1299 diaphragm seal on any pressure / level / DP application with sticky, scaling, or polymerizing media.
1/4" NPT x G1/4 Adaptor, for 900 Series
1/4" NPT x G1/4 Adaptor for NOSHOK 900 Series gauges.
M12 x 1 Mating Cable, Female Angle x Cable, 4-Pin, 2 m
M12 x 1 mating connector cable for NOSHOK transducers and switches: female angle x cable, 4-pin, 2 m length.