Steam Products

Introduction Watts has been a leader in steam management technology and products since 1874. Steam products perform under severe conditions requiring high quality performance and quick in-line maintenance. We recognize the importance and value of designing high quality, longer service life features for these types of products. All our steam products are engineered to exceed established standards. This brochure describes the full line of Watts steam products designed to provide cost effective, efficient steam system solutions. Table of Contents General Information Steam Traps . . . . . . . . ....

General Information Steam Traps Watts manufactures a variety of steam traps. To determine which trap is best for your application it is helpful to understand how each style of steam trap works. Below is a brief description of the operating principal of Thermostatic, Float & Thermostatic, Open Float & Thermostatic, Inverted Bucket, and Thermodynamic steam traps. Thermostatic Radiator Traps The thermostatic element in a radiator trap responds to temperature to open or close. At start-up when air and condensate are cooler the thermostatic element (diaphragm) contracts pulling the valve head off...

General Information Thermodynamic Traps At start-up, air and condensate under pressure raise the disc off of the valve seat opening the trap allowing discharge into the condensate return line. Hot condensate flashes to steam as it goes through the trap body. The velocity of the flash steam creates a lower pressure area under the disc causing the disc to seat. The pressure of the flash steam in the cap keeps the disc on the valve seat, closing the trap. The trap remains closed until the flash steam condenses allowing system pressure to raise the disc off of the valve seat. • These traps are ideal...

General Information Process Applications Process Applications include the following: heat exchangers, air handling coils, pre or reheat coils, unit heaters, cooking kettles and absorption chillers. Use WFT traps, sized at full load at 1⁄4 psi differential. You Need to Know the Following to Properly Size a Process Trap: • Steam load in #/hr • Maximum system pressure • Application (back pressure, lift to overhead returns or vacuum) Watts 415 Safety Relief Valve Steam Supply Watts 152A Pressure Reducing Valve Watts Strainer Watts WFT-15 Steam Trap Condensate Return Jacketed Steam Kettle Pressure...

General Information A Guide to Steam Loss Faulty Steam Traps Are Leaking Money The constant drive for energy conservation combined with the continual rise in energy costs has motivated colleges, universities, hospitals and other large facilities throughout the U.S. to become more aware of energy waste. In spite of this, institutions often overlook one particular area: the steam system. This is because steam systems appear to be functioning well. This perception may be misleading because the steam system may still be wasting significant amounts of energy and money. The problem — a well designed...

General Information Steam Loss through Trap Orifices at Various Steam Pressures If you know the size of the orifice that is leaking steam and your particular system’s pressure (psi), you can determine what the leak is costing you in wasted energy by using the graph above. For example, take a 1⁄4" (0.250 in.) orifice on a 2psi system. Find 0.250 on the vertical axis labeled Orifice Diameter (inches). Read horizontally to the 2psi steam pressure line. Then read vertically downward to “steam loss rate line” and determine steam loss rate at 19 lbs./hour. Steam costs approximately $5.00/ per 1,000...

Steam Traps Series G, GH, MG, MGH Thermostatic Radiator Steam Traps For operating pressures up to 65psi (4.5 bar) Sizes: 1⁄2" – 1" (15 – 25mm) Series G, GH, MG, MGH Thermostatic Radiator Steam Traps are designed to remove condensate, air and non-condensable gases from heating systems. The balanced pressure duplex phosphor bronze diaphragm is a highly sensitive modulating unit thermally programmed to provide accurate steam conserving operation. Available in a choice of various body patterns including angle, straightway, left hand corner, right hand corner, vertical and vertical double union. •...

Steam Traps Series QF Quick-Fix™ Radiator Steam Trap Replacement Kits Series QF Quick-Fix™ Radiator Steam Trap Replacement Kits are used to repair old or obsolete radiator steam traps without the cost of replacing the steam trap body or expensive repiping. The stainless steel capsule and valve seat are designed as original equipment parts for many hard to find or obsolete radiator steam traps. Remove the cover of the old steam trap and take out any remaining trap parts. Install the stainless steel Quick-Fix™ seat and snap the stainless steel capsule onto the new seat. Replace the cover and the...

Steam Traps Series WFT Float & Thermostatic Steam Traps For operating pressures up to 125psi (8.6 bar) Sizes: 3⁄4" – 2" (20 – 50mm) Series WFT Float & Thermostatic Steam Traps are designed to provide continuous air venting and separate condensate draining with maximum efficiency and service. The “H” pattern body on all 3⁄4", 1" (15, 30, 75, 125psi) and 11⁄4" (15, 30psi) has been designed to offer maximum installation flexibility. Four possible hookup combinations, combined with similar piping dimensions to other major manufacturers, make this the “universal” replacement trap. For larger sized...

For additional information, request literature ES-WFT. Series WFTC, WFTK Float & Thermostatic Steam Trap Cover Assemblies and Repair kits Sizes: 3⁄4" – 2" (20 – 50mm) Series WFTC, WFTK Float & Thermostatic Steam Trap Cover Assemblies & Repair Kits are designed for use on Watts and select Spirax-Sarco F&T steam traps. Features • Quick, easy and economical • Simplifies and standardizes inventory • All stainless steel corrosion resistant internal parts Models WFTC Cover assembly consists of a complete factory assembled unit which simply bolts on for ease of repair. No pipe connections need to be...