Recorder Parts

We stock all links, levers, seals, gaskets, brackets and plates as well as the sensing elements and accessories shown here, for Barton, Clif Mock, American Meter, Canadian Meter, Briar Equipment, PMC, and Natco circular chart recorders.  Call or email us for prices.

Barton 202E recorder manual

Differential Pressure Units

We repair in-house for purchase or exchange the Barton Type 199 differential pressure units. Every unit gets new zinc dichromate electroplating as well as brand new and never before used convolution assemblies. The most common units that stocked are of the 2500 PSIG SWP specification. We keep units ready to ship in numerous differential pressure ranges including: 0-20", 0-50" 0-100", 0-200", 0-300" and 0-400" Water Column ranges Peterson Instruments also stocks the 1000SWP model 199 units and the hi differential units for ranges up to 75psig differential.

Range Springs

Stocked ranges of 0-20", 0-50', 0-100", 0-200", 0-300", and 0-400" W.C. We stock sour service application range springs only.

Static Elements

Our replacement static element are made to the exacting standards of the OEM's at a fraction the cost. We stock large quantities of pressure ranges from 25 up to 0-10,000psig. Ranges up to 30,000psig stocked in lesser quantity or may be available on special order.

Thermal Systems

We can custom make almost any length and range of thermal systems. With our standard large stock being of 0-150F x 10 foot long armored capillary, in the case compensated type, VB. Ask about our third pen kits with everything you need to add the temperature measurement option to your recorder.


We stock thermowells that fit Barton, American, Dri Flo, Singer, Briar and Canadian Meter recorder thermal systems in process connections sizes of 3/4" and 1" MNPT and 'u' lengths to 2, 3 ,4 ,5 ,6, 8, &12" pipe. 316 Stainless Steel.

Instrument Leveling Saddles

Our saddles are cast steel for extraordinary strength while retaining the ability to be produced economically. We stock 2, 3, 4, 6, 8, 12" leveling saddles with a 2" FNPT outtage fitting. We also stock the outtage pipe in lengths of 24".

5 Valve Block Manifold

The five-valve natural gas manifolds offered by Peterson Instruments are designed for use with differential pressure and multivariable transmitters or recorders. Incorporated into the manifolds, two block valves provide instrument isolation and a single drain/vent valve allows for controlled venting, 100% capture of vented or drained process, and simplified in-process calibration capability. In addition, two equalize valves provide extra protection from leaking to ensure DP signal integrity.