01. Intro - 3rd Edition

01. Intro - 3rd Edition - 1 NICHOLSON STEAM TRAP Nicholson...

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Unformatted text preview: 1 NICHOLSON STEAM TRAP Nicholson Steam Trap was founded in 1883 by W. H. Nicholson, Sr. He, along with his sons William, George and Samuel produced a variety of steam specialty products at their facility in Wilkes-Barre, Pennsylvania. Trap manufacturing was begun early in the twentieth century with the precursor to our current weight operated series traps. In the 1930’s, a wide range of bellows-activated thermostatic traps were developed, the descendants of which are still built today in a modern facility at Walden, New York which manufactures a wide range of products from safety valves to control valves and, of course, steam traps. The Nicholson Steam Trap product line is focused on the industrial marketplace and features traps ranging from highly polished stainless steel sanitary traps to innovative free float F&T traps. Nicholson thermostatic traps are known throughout the industry for their value and durability. Equally respected in naval yards are Nicholson orifice traps, offering long life and easy maintenance. A recent product introduction is the Condensate Commander Pump; a steam powered pump available in several sizes including prefabricated skid mounted systems. These continue the Nicholson tradition of providing high performance, value-oriented products to the industrial marketplace. Nicholson Steam Trap, located in Walden, New York, has been producing a full line of steam specialties including steam traps, condensate pumps, sanitary steam traps, air traps and drain orifice unions since 1883. Nicholson Steam Trap is a Division of Spence Engineering Company, Inc. For more information on Nicholson Steam Trap, visit our website at www.nicholsonsteamtrap.com or reach us via e-mail at sales@nicholsonsteamtrap.com STEAM TRAP a Division of Spence Engineering Company, Inc. 8 45.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 2 TABLE OF CONTENTS The Nicholson Advantage is Service …………………………4 How to Use this Handbook ……………………………………5 Steam Trap Selection …………………………………………6 Types of Steam Traps …………………………………………6 Selecting a Steam Trap ………………………………………6 Checklist for Confirming Operating Conditions ………………7 Steam Trap Application Guide ………………………………8 Steam Trap Selection Criteria Matrix …………………………9 Nicholson Steam Trap Options ………………………………9 CLEAN STEAM PRODUCTS CDS Sanitary Thermostatic Steam Traps …………………70 CDH Sanitary Thermostatic Steam Traps …………………72 DS100/DS110 Thermostatic Steam Traps …………………74 DS200 Series Thermostatic Steam Traps …………………76 Sanitizer NTD 230L Series Sanitary Thermodynamic Steam Traps ……………………………78 Steam Scrubber Stainless Steel Filter ………………………80 Type D50 Stainless Steel Steam Pressure Reducing Valve 82 CONDENSATE RECOVERY Condensate Condensate Condensate Condensate Condensate Condensate Condensate Condensate Condensate Condensate Condensate Condensate Commander Commander Commander Commander Commander Commander Commander Commander Commander Commander Commander Commander Pump Features …………………84 Pump ……………………………86 Classic Pump …………………87 Big Boy Pump …………………88 Horizontal Pump ………………89 Little Boy Pump ………………90 Pump Capacity Table …………91 Pump Skid Mounted System …92 Pump Primer ……………………94 Pump Checklist …………………95 Pump Selection Guidelines ……96 Pump Installations ………………97 THERMOSTATIC STEAM TRAPS Liquidator 450 Series Thermostatic Steam Trap Features 10 N125 Series Thermostatic Steam Traps ……………………12 N450 Series Thermostatic Steam Traps ……………………14 Liquidator 450 Series Universal Mount Thermostatic Steam Traps ………………………………16 TA Series Thermostatic Steam Traps ……………………18 N650 SeriesThermostatic Steam Traps ……………………20 Achiever “A” Series Thermostatic Steam Traps ……………22 Believer “B” Series Thermostatic Steam Traps ……………24 Conqueror “C” Series Thermostatic Steam Traps …………26 MECHANICAL STEAM TRAPS Nova NFT250 Series Variable Orifice Steam Traps Features …30 Dura-Flo Inverted Bucket Steam Trap Features ……………31 Nova NFT250 Series Variable Orifice Steam Traps ………32 Nova NFT650 Series Variable Orifice Steam Traps ………34 FTN Series Float & Thermostatic Steam Traps ……………36 Max-Flo Super High Capacity Float & Thermostatic Steam Traps ………………………………38 FTE Series Float & Thermostatic Steam Traps ……………40 Dura-Flo Inverted Bucket Steam Traps ……………………44 Dura-Flo Inverted Bucket Steam Traps PCA Repair Kits …47 FTN Series Float & Thermostatic Steam Traps Repair Kits 47 Sealed SS Dura-Flo Inverted Bucket Steam Traps…………48 Repairable SS Dura-Flo Inverted Bucket Steam Traps ………50 UNIFLEX COUPLINGS AND GENERAL USE VALVES Uniflex Carbon/Stainless Steel Pipe Couplings Features 100 Uniflex Carbon/Stainless Pipe Couplings …………………102 Type D Pressure Reducing Valve …………………………104 AIR TRAPS/LIQUID DRAINERS Drain-Air & Mini-Drains ……………………………………108 TAV Series Thermostatic Air Vent …………………………110 Eliminator Series Steam Separator ………………………112 PIPING SPECIALTIES Big Block UMT Valve Station Features ……………………114 Big Block Universal Mount Trap Valve Station …………116 STV Series Combination Trap Test & Blocking Steam Valve ……………………………………118 SS600 Series Noise Diffuser ………………………………120 Pneumatic Mufflers …………………………………………122 THERMODYNAMIC STEAM TRAPS Liquidator UMT-TD Series Thermodynamic Steam Trap Features ……………………………………………………52 NTD600 Series Thermodynamic Steam Traps ……………54 S610 Series Thermodynamic Steam Trap …………………56 S650 Series Thermo-active Steam Trap ……………………58 Liquidator UMT-TD Universal Mount Thermodynamic Steam Traps ……………………………60 ORIFICE STEAM TRAPS Type DFA Drain Orifice Steam Trap …………………………64 Type DUA Orifice Union Assembly …………………………66 STEAM TRAPPING PRIMER Thermostatic Steam Traps …………………………………127 Mechanical Steam Traps ……………………………………127 Thermodynamic Steam Traps ………………………………129 Orifice Steam Traps …………………………………………129 Sizing Steam Traps …………………………………………130 Sizing Condensate Return Lines …………………………136 Steam Tracing Design Guidelines …………………………137 Clean Steam Design Guidelines ……………………………138 Piping & Trapping Design Guidelines ………………………138 Sizing Eliminator Steam Separators ………………………139 845.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 3 TABLE OF CONTENTS TECHNICAL REFERENCE Steam Tables…………………………………………………142 Pressure to Vacuum …………………………………………144 Properties of Water …………………………………………144 Condensation Warm-up Loads ……………………………145 Condensation Loads ………………………………………145 Conversion Tables …………………………………………146 Pipe Data Tables ……………………………………………147 APPLICATION DRAWINGS Oven Heating Coils …………………………………………152 Drip Leg/End of Main Leg …………………………………153 Shell & Tube Heat Exchanger ………………………………154 Vessel with Steam Coil Outlet at Top ………………………155 Unit Heater …………………………………………………156 Flat Work Ironer ……………………………………………157 Steam Press …………………………………………………158 Jacketed Pressure Vessel …………………………………159 Pressure Vessel with Dimple Jacket ………………………160 Flash Tank with Condensate Booster Pump………………161 Multi-coil Air Handler ………………………………………162 High Pressure Air Coil ………………………………………163 Dry Can/Calender Roll ………………………………………164 Jacketed Kettle ………………………………………………165 Tilting Jacketed Kettle ………………………………………166 Domestic Hot Water…………………………………………167 Glossary of Terms……………………………………………168 8 45.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 4 THE NICHOLSON ADVANTAGE IS SERVICE LOCAL TECHNICAL SUPPORT Nicholson Steam Trap has a network of technically trained Representatives around the world. These Representatives can direct you to local inventory of our products for fast, fast service. They can also help you in the selection and sizing of Steam Traps, Air Traps, Condensate Pumps and other Steam Specialties. TECHNICAL TRAINING We offer a regular schedule of workshops covering various technical issues in our state of the art Valve Technology Training Center. We can also schedule customized training sessions to suit your particular needs. ENGINEERING SEMINARS. These seminars provide the engineer with the skills of steam trap selection and sizing. DISTRIBUTOR SEMINARS. This seminar will provide you with all the information you need to serve your customers. MAINTENANCE SEMINARS. Maintenance personnel will receive hands-on training in selection, installation, operation, maintenance and troubleshooting. NICHOLSON GUARANTEE Nicholson Steam Trap warrants that the products we manufacture will be free from any defects in material or workmanship for a period of one year (or longer, when specified in product literature) from receipt by purchaser. INTERNATIONAL SALES Nicholson is well equipped to provide product to our customers around the world. We regularly ship our products to all parts of the world. Our experienced international sales group can meet the transport and documentation requirements of our international customers with ease. Our network of International Technical Sales Representatives will also be able to provide you with product from local inventory. CANADIAN SALES Nicholson maintains a technical sales representative network throughout the Canadian provinces. Nicholson products are registered with Canadian federal and provincial authorities. Canadian Registration Numbers are available. Please consult factory for a particular product CRN. 845.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 5 HOW TO USE THIS HANDBOOK If you already know the product that you want information on, find the product page in the Table of Contents. Detailed product information on materials, ratings, dimensions, weights and applications are found in the Products Sections. General application and design information is in the Primer Section. If you are not sure of what you need, collect all the following information. You will need it to select the right product for your needs. Service (i.e.: Steam, Compressed Air, Water, etc.) Inlet Pressure Flow Rate (or Capacities) Outlet or Condensate Return Pressure Application (i.e.: Condensate Removal, Pump, Pipe Couplings, etc.) Application data is listed on all Product Pages. If you identify the nature of the installation, it will assist you selecting the proper equipment. WHAT KIND OF TRAP IS NEEDED? Bucket? F&T? Disc? Steam Pump? First the objective must be defined - then a trap must be chosen. If pumping is required then a condensate commander must be selected. Once the requirements for condensate removal have been defined, the primer section may be consulted to best match product characteristics to the application at hand. Following the primer section the trap selection guide should help refine the search. For those who possess a basic understanding of traps and the Nicholson product line, starting with the trap selection guide may be appropriate. Once the application parameters have been defined (e.g. condensate removal from a 70 psi steam system, drip leg application, continuous duty, 180 lb/hr condensate flow) and a design of trap decided upon (e.g. thermostatic, carbon or stainless steel construction, 200 psi minimum operating pressure, integral strainer) the product section should be consulted to determine the range of traps available. Often several traps may meet the need. General preferences such as repairable design versus sealed, maintenance free designs, size and piping configuration, and cost are a few considerations that will help select a specific type trap. ECONOMICAL, LONG LIFE, OR BEST SUITED FOR THE APPLICATION Unfortunately, the best trap for an application may not necessarily be the least expensive or have the longest life span. Typically, other considerations such as ease of maintenance, initial cost, piping considerations, etc. may influence trap selection. The product section will list all pertinent specifications including overall length and features that may influence trap selection. HOW TO FIND NICHOLSON TRAPS Nicholson Steam Traps are manufactured and stored in Walden, New York, a village located in the lower Hudson Valley about 60 miles north of New York City. Nicholson goes to market through Manufacturers’ Representatives and Stocking distributors across the country. To find the nearest stocking location, contact the Nicholson factory at 845-778-5566 or visit our web site at www.nicholsonsteamtrap.com. 8 45.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 6 STEAM TRAP SELECTION Types of Steam Traps Thermostatic Type Bellows Bimetal Intermittent Condensate Discharge Intermittent Mechanical F&T Continuous Thermodynamic Bucket Intermittent Disc Intermittent Orifice Orifice Continuous q The optimum application of a trap is dependent upon the characteristics of the process and equipment with which it is used and its pattern of condensate discharge. q The discharge capacity of a trap is determined by the pressure differential (trap inlet pressure minus outlet pressure) and the size of the orifice. Thermodynamic and Thermostatic traps (radiator and temperature modulating) have a fixed orifice size. q Mechanical traps differ from the other types in that their orifice (discharge opening) must be selected to accommodate the maximum operating differential pressure. Caution Failure to select the proper orifice may result in insufficient discharge capacity, waterlogging or locking of the trap. Selecting a Steam Trap It is important to select a product with the optimum capacity from the many types which are available. Use the following procedure to make sure the correct product is selected. 1 2 3 Application Define the application and the type of service in which it will be used. The conditions under which a trap must operate will differ according to where it it installed. Steam Trap Application Guide Check List for Confirming Operating Conditions Discharge Rate Tables for Each Model Confirmation of Operating Conditions Check the maximum operating pressure, temperature, discharge rate and other conditions. Do not oversize the trap. Select the smallest capacity trap, yet avoid undersizing and ensure safe, accurate operation given the conditions of inlet pressure, temperature and pressure differential under which it will operate. Maintenance Preference Confirm whether inline repair feature or maintenance free technology is desirable. Specification Tables for Each Model 845.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 7 CHECK LIST FOR CONFIRMING OPERATING CONDITIONS (A) Confirmation of Conditions 1. What is the application? 2. Which trap is appropriate for the application?*1 3. What is the trap inlet pressure?*2 4. What is the outlet pressure?*2 5. What is the condensate load? psig psig lb/Hr (B) Selection 1. The required discharge capacity of the trap is ___ times*3 the amount of condensate generated. 2. Inlet pressure – Outlet pressure = Pressure differential. 3. Select a trap with a maximum operating pressure equal to or slightly above the inlet pressure to the trap. 4. Select a discharge rate for the pressure differential from the discharge capacity chart. Discharge Product name Pressure differential Required discharge capacity ❏ ❏ ❏ 6. Connection size 7. Connection Type ❏ Screwed ❏ Flanged (flange standard_____) psig lb/Hr 5. The trap with the smallest discharge capacity greater than that required is the optimum trap. in ❏ Socketweld ❏ No…(back pressure = 0 psig) psig psig psig psig *1. See tables for selection of a steam trap by application. *2. If unknown, is condensate recovered? ………………………………………… ❏ Yes If condensate is recovered x How many feet does the trap outlet rise? y What is the total pipe length from the trap to the recovery tank? ft. ft. x 0.5 = x 0.01 = z What is the pressure of the condensate recovery tank? ……………………………… { Add x, y and z ………{This is the outlet pressure (back pressure).} x + y + z = *3. Safety Factor The margin of safety which is determined by the operating characteristics of each piece of equipment is referred to as the “safety factor.” The safety factor required will differ according to the type of trap (type of condensate discharge). The discharge rate table for each model shows the values for condensate discharge when the trap is fully open, and the maximum rated condensate load on the equipment should correspond to the value obtained by dividing this discharge rate by the safety factor (see Steam Trap Application Guide on opposite page). 8 45.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 8 STEAM TRAP APPLICATION GUIDE This guide is designed to direct the user to a General Steam Trap Technology section. Once a technology is selected, additional details, regarding specific steam traps, can be found in the catalog under the Technology Selection tab. These choices, in the Guide, are based on many years of steam trap manufacturing experience. The choices, however are not limited to these alone. Variations in individual systems (superheat, water hammer, insulation, etc.), as well as personal preference, should be taken into consideration. Application Drip & Tracing Main Drip to 30 to 300 to 650 to 2500 PSIG PSIG PSIG PSIG Thermostatic Thermodynamic Free Float Inverted Bucket Float & Thermostatic Orifice Minimum Safety Factor 1 1 1 1 2 2 2 2 3 3 2 2 3 3 2 4 3 2 1 3 1.5:1 1.5:1 1.5:1 1.5:1 1.5:1 Steam Tracing 2 2 Process Heat Exchanger to 20 to 150 to 300 to 600 to 15 to 60 to 150 to 600 PSIG PSIG PSIG PSIG PSIG PSIG PSIG PSIG 2 1 1 2 1 1 2 1 1 2 2* 1 Storage Line Heater 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1* 2 2 2 1 2 2 2 2 3 3 3 2 2 3 2 2 2 2 2 1 1 1 1 1 1 1 1 3 2:1 2:1 2:1 2:1 3:1 3:1 3:1 3:1 3:1 3:1 2:1 3:1 2:1 1.5:1 3:1 2:1 Cooker/Reactor Pressing Reboiler Rotating Cylinders Sterilizer Tank Heating Evaporator to 100 PSIG to 300 PSIG HVAC Air Heating Coils to 15 PSIG to 60 PSIG to 250 PSIG 2 2 2 1 1 2 1 1 2 2 1 1 1 1 1 3 2 1 1 4 2:1 2:1 3:1 2:1 2:1 2:1 Radiator Unit Heater Absorption Chiller *Requires Steam Lock Release KEY Blank = not recommended 1 = First Choice 3 = Third Choice 2 = Second Choice 4 = Fourth Choice 845.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com 9 STEAM TRAP SELECTION CRITERIA MATRIX Thermostatic FUNCTION Response to Load Changes Air Venting Thermal Efficiency Applications Moderate High High Drip Legs Tracing Process Eqpt. Slow Low Medium Drip Legs Tracing Thermodynamic F&T Fast Med/High Med/High Drip Legs Process Eqpt. Mechanical IB Moderate Low Medium Drip Legs Process Eqpt. Orifice Free Float Fast High Med/High Drip Legs Process Eqpt. No (may freeze) Meduim High to 650 psi Large Long Moderate Yes Very Slow Low High† Drip Legs Affected By Ambient Temperatures Relative Cost Capacity Pressure Range Size vs. Capacity Life Expectancy Ease of Maintenance Orientation Limits † Within narrow load range. No Yes (unless insulated) Low Medium to 650 psi Small Moderate Very Easy No Low Low 10 to 600 psi Medium Moderate Very Easy No No (susceptible to freezing) Meduim Med/Low High to 650 psi to 250 psi Large Moderate Moderate No Low Low to 2500 psi Small Long Very Easy No Moderate Yes NICHOLSON STEAM TRAP OPTIONS Steam Lock Release (SLR) Orifice Specify where immediate elimination of condensate and improved sensitivity is desired. This option may also improve performance in applications where condensate must be lifted upstream from the trap. Allows continuous discharge of condensate. Trap will nominally pass 50 lb/hr of condensate at 50 psi within 2°F of saturated temperature. Skirted Seat Trim Recommended for higher pressure service, often over 300 psi. Minimizes erosion by dispersing trap discharge. Sterilizer Trim Specify where immediate elimination of condensate and improved sensitivity is desired. Shorter seat opens more quickly in presence of condensate. Hotter discharge temperature. Internal Strainer Recommended where steam may be contaminated with pipe scale or other particulate matter. Screen reduces deposits on valve and seat. Blowdown Valve Specify to clean strainer area and remove debris trapped before strainer. Also used to determine whether steam or water is present before the steam trap. ISO Filled Actuator Specify to reduce flash steam, provide highest thermal efficiency and/or air vent operation is desired. This option will subcool condensate by approximately 40°F. For use in applications above 500 psig and/or for superheated steam. Welded Actuator Specify where long service life and/or fail open operation is desired. Continuous Bleed Air Vent Replaces thermostatic air vent with a 1/32 inch orifice. 8 45.778.5566 q Fax: 845.778.7123 q www.nicholsonsteamtrap.com ...
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