Category H Fittings
| Accumulators up to 5.4″ dia | Accumulators Inc. |
| Accumulators various lengths, up to 6″ dia | Parker Hannifin Corporation Accumulator Div. |
| Air Relief Valve | Diamond Power Specialty Company |
| Auto Purger Assemblies | Hansen Technologies Corporation |
| Basket Strainer Assemblies up to 6″ x 10″ | Islip Flow Controls Inc. |
| Brazed Plate Heat Exchangers | Itt Standard |
| Cam & Groove Couplings | Dixon Bayco Limited |
| Compression Desiccant Dryers | Atlas Copco Airpower N.V. |
| Cooker/ Cooler System | Charlottetown Metal Products |
| Couplings | Emco Wheaton Gmbh |
| Diaphram Seals up to 1′ dia | Ashcroft Instruments Canada Inc. |
| Direct Steam Injection Liquid Heaters | Pick Heaters Inc. |
| Evaporator Coils | Evapco Inc. |
| Evaporators | Baltimore Aircoil Of Canada Inc. |
| Filter and Membrane Assemblies up to 3″ dia | Parker Hannifin Corporation |
| Filter and Membrane Housings & Vessels | Sommer & Strassburger GmbH & Co.KG |
| Filter Housings | Donaldson Filtration Deutschland Gmbh |
| Flowcell Flowmeters up to 24″ dia | Ge Industrial Sensing. |
| Heat Exchangers | Aero Heat Exchanger Inc. |
| Heat Exchangers | HRS Heat Exchangers |
| Heliflow Coil Head Exchangers | Graham Corporation |
| Humidifiers and Heat Exchangers | Armstrong International |
| Intelliflow System Pressure Controller up to 8″ dia | Ingersoll Rand Company |
| Liqui-Mover Fluid Handling Devices | Kadant Johnson Inc. |
| Oil Separators and Pressure Vessels | Gianesi Edilio S.R.L. |
| Plate Heat Exchangers | Alfa Laval Flow Equipment (Kunshan) Co. Ltd. |
| Positive Displacement Meters and Swivel Joints | Fmc Measurement Solutions |
| Pressure Regulators up to 0.5″ dia | A+ Corporation Llc |
| Pressure Vessels | Gbm S.R.L. |
| Pressure Vessels | Kramer Gmbh Industriebehalter |
| Pressure Vessels and Transport Cradles | Kramer Decker Inustries |
| Pulsation Dampener | Flowguard Ltd. |
| Recviever Tanks and Air/Oil Seperators | Lagrange Products Inc. |
| Refridgerant Evaporator Coils | Guntner De Mexico S.A. De C.V. |
| Refridgeration and Compressed Air dryers | Parker Hiross S.P.A. |
| Refridgeration Dryers and Seperators | Domnick Hunter Hiross S.P.A. |
| Regulation Module 1″ Piping and Tubing | Hager Industries Inc. |
| Rotary Joints up to 3″ dia | Kadant Johnson Inc. |
| Sampling Valves | Dovianus B.V. |
| Sanitary Clamps | Titan group Supply |
| Sanitary Fittings | Rodger Industries Inc. |
| Sanitary Fittings | TriCanada |
| Seal Pots, Thermowells and Orifice Plates up to 24″ dia | Mac-Weld Machining Ltd. |
| Sealer Cooler | Flowserve Fsd Corporation |
| Simplair Compressed Air Piping System up to 150mm dia | Ingersoll Rand Company |
| Small Pressure Vessels, Oil Seperators and Housing | Bwb Behalter-Werk Burgau Gmbh |
| Steam Heater Rig | Hazloc Heaters Inc. |
| Steam Injection Heaters | Hydro Thermal Corporation |
| Tank and cylinder fittings | Phoenix Forge |
| Thermal Transfer Products | Api Airtech |
| Vapourizers | Algas-Sdi |