{"id":101,"date":"2011-01-04T16:01:06","date_gmt":"2011-01-04T16:01:06","guid":{"rendered":"https:\/\/tunstall-inc.com\/?page_id=101"},"modified":"2023-03-29T09:06:38","modified_gmt":"2023-03-29T13:06:38","slug":"about-tunstall-capsule-steam-traps","status":"publish","type":"page","link":"https:\/\/tunstall-inc.com\/steam-traps\/tunstall-capsule\/about-tunstall-capsule-steam-traps\/","title":{"rendered":"About Tunstall Capsule Steam Traps"},"content":{"rendered":"

Overview<\/h3>
\"\"<\/a>Tunstall Steam Capsules\u00a0have been in service since 1985. Their warranty performance since that time has resulted in a practically nonexistent failure rate. The Tunstall Steam Trap Capsule\u00a0has changed the nature of the steam trap repair business.<\/p>\n

Before the advent of stainless steel forming and TIG welding technology, steam traps consisted of thermostatic parts made by crimping and soldering of plated materials; the chief feature of this system resulted in products that had built in obsolescence. Hydro formed phosphor bronze bellows were more successful but the cost was considerably higher than common diaphragm cage assemblies.<\/p>\n

Tunstall Steam Trap Capsules\u00a0are fabricated of TIG welded stainless steel, which take advantage of existing Aerospace Technology, with extremely close manufacturing tolerances. Their stainless steel bellows counterparts can be found on commercial aircraft and aerospace equipment throughout the world.<\/p>\n

Tunstall Steam Capsules\u00a0retrofit almost all thermostatic steam traps made in the early 20th century to the present. Each capsule is individually tested and calibrated before shipment. We believe Tunstall Steam Trap Capsules\u00a0are by far the best way to repair and upgrade existing traps for years of trouble free service.<\/p>\n

We will be glad to manufacture steam trap interiors for any thermostatic trap assembly ever made. Our products provide the simplest, most effective installation and removal process in the business. We warranty all materials and take pride in being the best product available today.
\n<\/div>\n

Specifications<\/h3>
\nTypical Specification Thermostatic steam trap repair units shall be Tunstall Steam Trap Capsule\u00ae (1-800-423-5578) or approved equal. Capsules to be rated for Vac to 125 psig working pressure. Due to the extended life of high pressure bellows units on low pressure applications, only high pressure bellows units will be acceptable. Capsule to be made entirely of corrosion resistant stainless steel with TIG welded construction. The actuator shall be a ten plate stainless steel bellows, with heat treated hardened ball bearing close off mechanism. Bellows shall be entirely enclosed in a protective stainless steel capsule to prevent damage from water hammer and debris build-up. The replacement capsule shall include integral welded stainless steel seat able to fit directly into the condensate portion of the steam trap body. Diaphragm, Nozzle, Orifice, Venturi, Quick Fix, Wafer, Nugget or low pressure units are not acceptable. The replacement Tunstall unit must be of universal design, able to retrofit the existing thermostatic steam traps. New covers may be necessary and shall be provided as required.<\/p>\n

Typical Examples<\/strong><\/p>\n\n\n\n\n\n\n
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More Information<\/h3>
\nThermostatic steam trap repair units shall be Tunstall Steam Trap Capsule<\/em>\u00ae<\/sup><\/strong> (1-800-423-5578) or approved equal. Capsules to be rated for Vac to 125 psig working pressure. Due to the extended life of high pressure bellows units on low pressure applications, only high pressure bellows units will be acceptable. Capsule made entirely of corrosion resistant stainless steel with TIG welded construction. The actuator shall be a ten plate stainless steel bellows, with heat treated hardened ball bearing close off mechanism. Bellows shall be entirely enclosed in a protective stainless steel capsule to prevent damage from water hammer and debris build-up. The replacement capsule shall include integral welded stainless steel seat able to fit directly into the condensate portion of the steam trap body. Diaphragm, Nozzle, Orifice, Venturi, Quick Fix, Wafer, Nugget or low pressure units are not acceptable. The replacement unit must be of universal design, able to retrofit the existing thermostatic steam traps without the necessity of providing a new cover.
\n<\/div>\n

Fuel Savings Formula<\/h3>
\n

Is a steam trap survey necessary?<\/strong><\/p>\n

1. It takes approximately one lb of steam to generate 1,000 BTU\u2019s.<\/p>\n

2. The energy content of one gallon of #6 fuel oil = 149,700 BTU\u2019s with a combustion efficiency of 86.1%
\n(U.S. Dept. of Energy, Office of Industrial Technologies).<\/p>\n

3. With #6 oil at $1.30\/gallon then:
\n1.30 ($\/gallon) \/ 149,700 (BTU\/gallon) \u00a0 X \u00a0 \u00a0 1000 (BTU\/lb) \u00a0 \u00a0 X \u00a0 \u00a0 .861 (efficiency) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0$.0075 per lb<\/strong>
\nTherefore the cost of steam is $0.0075\/lb or $7.50\/1000 lbs<\/strong><\/p>\n

4. Steam trap hours of use per year:
\nheat season (120 days) \u00a0\u00a0\u00a0 X \u00a0\u00a0\u00a0 12 hours per day = 1440 Hours<\/p>\n

5. Steam loss thru a typical thermostatic trap with a 0.312\u201d (5\/16\u201d) orifice at 5 psi (+ 14.7 psi atmospheric pressure) and 50% blocked (based on a variant of the Napier formula, as follows) = 23.3 lbs\/hr<\/p>\n

Steam flow (to atmosphere) in lbs\/hr:<\/strong>
\n24.24\u00a0\u00a0\u00a0\u00a0 X \u00a0\u00a0\u00a0\u00a0 pressure psi absolute \u00a0\u00a0X\u00a0\u00a0\u00a0\u00a0 diameter of orifice squared\u00a0 \u00a0X \u00a0\u00a0 50% Blockage
\n24.24 \u00a0\u00a0\u00a0\u00a0X\u00a0\u00a0\u00a0\u00a0 (5 psi + 14.7 psi) \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X \u00a0\u00a0\u00a0\u00a0(.312)(.312) \u00a0 X \u00a0\u00a0\u00a0 .50 \u00a0 \u00a0 \u00a0 = 23.3 lbs\/hr<\/p>\n

\"Steam<\/p>\n

6. Therefore, in one heating season, one trap 50% blocked translates into an effective steam loss cost of approximately $250.00 per trap.
\nsteam loss\/hr \u00a0\u00a0 X \u00a0\u00a0 heating season \u00a0\u00a0 X \u00a0\u00a0 cost of steam per lb = cost per season per trap
\n23.3 lbs\/hr \u00a0\u00a0 X \u00a0\u00a0 1440 hrs \u00a0\u00a0 X \u00a0\u00a0 $0.0075 per lb = $250 per season per trap<\/p>\n

Yes, a Steam Trap survey is necessary! It does pay to inspect, repair, or replace your steam traps!<\/strong><\/p>\n


\n<\/strong><\/p>\n

Download Fuel Savings Formula<\/a><\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":8,"featured_media":0,"parent":98,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/pages\/101"}],"collection":[{"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/comments?post=101"}],"version-history":[{"count":1,"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/pages\/101\/revisions"}],"predecessor-version":[{"id":86082,"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/pages\/101\/revisions\/86082"}],"up":[{"embeddable":true,"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/pages\/98"}],"wp:attachment":[{"href":"https:\/\/tunstall-inc.com\/wp-json\/wp\/v2\/media?parent=101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}