Pressure Measurement
Pressure Measurement
High Accuracy Threaded Diaphragm
REOTEMP’s High Accuracy and High Displacement Threaded Diaphragm Seals are ideal for applications where high sensitivity or large fluid displacement is key to proper instrument performance. Designed with a diaphragm welded to the upper housing, the lower housing is detachable from the seal body allowing for easy cleanout of the process cavity without losing system fill. The High Accuracy Threaded Diaphragm Seal is most commonly mounted to Smart Transmitters (Gauge, Differential, and Absolute pressure), low pressure capsule gauges, mechanical DP gauges, and mechanical pressure switches.
Extra Large 4.1″ Diaphragm for Maximum Sensitivity
Wide Variety of Wetted Material Options
100% Helium Leak Tested Diaphragm Welds
Easy Cleanout Design with Multiple Flush Port Options
High Accuracy Flanged Diaphragm
REOTEMP’s High Accuracy Flanged Diaphragm Seals are ideal for applications where high sensitivity or large fluid displacement is key to proper instrument performance. Designed with a diaphragm welded to the upper housing, the lower housing is detachable from the seal body allowing for easy cleanout of the process cavity without losing system fill. The High Accuracy Flanged Diaphragm Seal is most commonly mounted to Smart Transmitters (Gauge, Differential, and Absolute pressure), low pressure capsule gauges, mechanical DP gauges, and mechanical pressure switches.
Extra Large 4.1″ Diaphragm for Maximum Sensitivity
Wide Variety of Wetted Material Options
100% Helium Leak Tested Diaphragm Welds
Easy Cleanout Design with Multiple Flush Port Options
Two-Piece Flanged Flush Face Diaphragm
Reotemp’s W9FR two-piece flanged flush-face seal keeps the process stream sweeping clean across the diaphragm to prevent solids buildup. Its insert-style, all-welded construction lets the diaphragm and sealing face be fabricated from an alloy other than the flange—ideal when Tantalum, Hastelloy, Monel, or other exotic wetted materials are required. The rotating flange further simplifies bolt alignment during installation.
Multi-piece Seal Design Bolts Directly to Process Flange
Center Instrument Exit
Commonly Supplied with Flush/Calibration Ring
Ideal for Gauge or Differential Pressure Transmitters
One-Piece Flanged Flush Face Diaphragm
Reotemp’s W9FF flanged flush-face seal is a one-piece, all-welded assembly. The diaphragm is integral with the flange, giving a crevice-free surface that keeps process flow sweeping across to prevent solids buildup. It is the most economical choice for 316 SS service, and can also be supplied in solid Hastelloy, Monel, Alloy 20, and other exotic alloys when enhanced corrosion resistance is required.
One-piece Seal Design Bolts Directly to Process Flange
Center or Side Instrument Exit
Commonly Supplied with Flush/Calibration Ring
Ideal for Gauge or Differential Pressure Transmitters
Extended Diaphragm
The Extended Diaphragm Seal is ideal for highly viscous and dry powder applications. Its unique design eliminates dead space in piping. It is often used for flush mounting in thick-walled vessels and is available in standard and custom lengths.
QPS Bleed Rings
Quality Products & Sales stocks Bleed Rings from 1" to 12" sizes in pressure ratings 150# to 1500#. Raised and Ring Joint styles are available in Carbon and Stainless Steel. Other materials and sizes quoted upon request.
Mac-Weld Bleed Rings
Manufactured 100% in house
SW Eliminate threaded connections.
Allows for on site calibration, venting, & purging.
No break of the process flange
CRN approved
Mac-Weld Flush Rings
Allows for transmitter calibration, venting and purging
The seal and process size transition design reduces installation and maintenance costs
Our engineered and manufactured-in-house design can be adapted and modified for your specific application
Eliminates the need for a reducing spool
Valve options available upon request
Manufactured in accordance with ASME, ASTM and ANSI standards
Available in carbon steel and stainless steel. Also available in most alloy materials
CRN approved
Mac-Weld Bleed Ring Assembly
Allows for easier installation on-site
Engineered and manufactured-in-house, designs can be adapted and modified for your specific application
Various valve options available upon request
Manufactured in accordance with ASME, ASTM and ANSI standards
CRN approval available upon request
Mac-Weld Flush Ring Assembly
Eliminates the need for a reducing spool
Valve options available upon request
Available in carbon steel and stainless steel. Also available in most alloy materials.
Manufactured in accordance with ASME, ASTM and ANSI standards
CRN approved
High Accuracy DP Gauges
Differential pressure is applied to the bellows and mechanical linkage assembly. As pressure changes, the bellows and linkage assembly is mechanically coupled to the gauge indicator pointer. If equipped with a micro-switch, a cam mechanically linked to the bellows, rotates and triggers the micro-switch. The major components of the Model 105/106 are a two-piece body, bellows sensing element and over-pressure assembly, a torque tube assembly, a range spring and the gauge front assembly. Model 105/106 assembly is protected against over-range in either direction to the rated working pressure by a bi-directional relief valve.
Powered by a test quality Bourdon Tube Assembly which is encapsulated in a high pressure chamber that is fitted with a pressure connection to the inside of the Bourdon Tube and a second connection to the pressure chamber. The Model 109 indicates the difference between the pressure applied inside the Bourdon Tube and the pressure inside the chamber. The output shaft of the gauge assembly is magnetically coupled through the solid wall of the pressure chamber to a sensitive jeweled pointer shaft in the dial housing outside the chamber. The magnetic coupling transmits the exact motion of the assembly to the pointer to give an accurate dial reading of the differential pressure. The Bourdon Tube Assembly is protected against over-range in either direction to the rated working pressure by a bi-directional relief valve.
Piston DP Gauges-Liquid
0-5 PSID to 0-400 PSID
Mid-West Instrument piston type gauges offer safe working Pressures up to 10,000 PSI
Rugged construction Weather Proof design
Common Applications:
Filter and Strainer Monitoring
Compressed Air
Hydraulic
Refrigerant
Pump Performance Testing
Heat Exchanger Pressure Drop Monitoring
Valves, Chillers etc., and for local flow indication and control
Gauge, Switch and Transmitter options
Diaphragm DP Gauges-Liquids and Gases
0-20” H2O to 0-100 PSID
Safe working Pressures up to 3,000 PSI
Rugged construction Weather Proof design
Common Applications:
Filter and Strainer Monitoring
Compressed Air
Hydraulic
Refrigerant
Pump Performance Testing
Heat Exchanger Pressure Drop Monitoring
Valves, Chillers etc., and for local flow indication and control
Gauge, Switch and Transmitter options
Tank Level DP Gauges
0-10” H2O to 0-800” H2O
Mid-West Instrument tank level type gauges handle safe working Pressures up to 1000 PSI
Rugged construction Weather Proof design
Common Applications:
Pressurized Tank Level Monitoring
Stationary Tanks – Horizontal or Vertical
Tanker Transport
For materials such as LOX, CO2, Ammonia, Nitrogen, Helium, Nitrogen Hydrogen and Argon
Gauge, Switch and Transmitter Options
Hazardous Location DP Gauges
Over 30 Years of proven design in the field for use in Hazardous locations
CSA, UL, IECEx Certifications
LVD RoHS Compliant
Certifications apply to the entire assy. as mandated by Hazardous Location Stds.
3-4 Unannounced inspections by CSA and UL per year
Yearly ATEX audits
See individual models for complete specifications
