{"id":4639,"date":"2025-06-03T11:28:44","date_gmt":"2025-06-03T03:28:44","guid":{"rendered":"https:\/\/www.shopvalves.com\/?post_type=product&p=4639"},"modified":"2026-03-24T10:26:45","modified_gmt":"2026-03-24T02:26:45","slug":"spirax-sarco-ft450","status":"publish","type":"product","link":"https:\/\/www.shopvalves.com\/en\/product\/spirax-sarco-ft450\/","title":{"rendered":"Spirax Sarco FT450 3\" High Capacity Float Thermostatic Steam Trap DN80 66719"},"content":{"rendered":"

The Spirax Sarco Spirax Sarco 3\" (DN80) and 4\" (DN100) FT450 is a high capacity float and thermostatic steam trap.
\nIt adjusts the position of the double-seated main valve by means of a float so that condensate can be continuously discharged at the same rate as it enters the trap. Air that accumulates in the trap during startup or operation is discharged through the built-in bimetal air vent into a standpipe connected downstream of the main valve mechanism housing.
\nThe trap can be used in superheated steam systems that meet the design conditions for pressure housings and is capable of operating at any backpressure lower than the inlet pressure, with the capacity determined by the differential pressure (inlet pressure minus outlet pressure).<\/p>\n

Spirax Sarco's FT450 Carbon Steel Float Trap (3\",4\") features an internal float mechanism for continuous drainage at saturation temperatures and a built-in thermostatic venting valve for non-condensable gases.<\/p>\n

Product Type<\/h3>\n\n\n\n\n\n\n\n\n
typology<\/th>\nFT450<\/th>\n<\/tr>\n<\/thead>\n
PMO<\/td>\n450 psig<\/td>\n<\/tr>\n
caliber<\/td>\n3\", 4\"<\/td>\n<\/tr>\n
grout<\/td>\n3\": NPT, SW, flange; 4\": flange<\/td>\n<\/tr>\n
material (that sth is made of)<\/td>\nCarbon steel body, stainless steel internal parts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Component Material<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nPart<\/th>\nmaterial (that sth is made of)<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nvalve body<\/td>\nCarbon Steel ASTM A216 WCB<\/td>\n<\/tr>\n
2<\/td>\nbonnets<\/td>\nCarbon Steel ASTM A216 WCB<\/td>\n<\/tr>\n
3<\/td>\nBonnet Gasket<\/td>\nStainless Steel Graphite<\/td>\n<\/tr>\n
4<\/td>\nBonnet bolts<\/td>\nAlloy Steel ASTM A193 GR B7<\/td>\n<\/tr>\n
5<\/td>\nLock washers<\/td>\nsteel (chemistry)<\/td>\n<\/tr>\n
6<\/td>\nMain valve assembly<\/td>\nStainless steel AISI 300<\/td>\n<\/tr>\n
<\/td>\nMain valve mechanism gasket<\/td>\nplumbago<\/td>\n<\/tr>\n
<\/td>\nMain valve mechanism bolts<\/td>\nstainless steels<\/td>\n<\/tr>\n
7<\/td>\nfloat<\/td>\nStainless Steel ASTM A240 Type 304<\/td>\n<\/tr>\n
8<\/td>\nBonnet hole (3\/4\" NPT)<\/td>\nsteel (chemistry)<\/td>\n<\/tr>\n
Drain hole (3\/4\" NPT)<\/td>\nsteel (chemistry)<\/td>\n<\/td>\n<\/tr>\n
9<\/td>\nflangeless<\/td>\nwrought steel<\/td>\n<\/tr>\n
10<\/td>\nFlange bolts<\/td>\nAlloy Steel ASTM A193 GR B7<\/td>\n<\/tr>\n
11<\/td>\nDrain valve assembly<\/td>\nstainless steels<\/td>\n<\/tr>\n
shortselling<\/td>\nstainless steels<\/td>\n<\/td>\n<\/tr>\n
Venting Seal<\/td>\nstainless steels<\/td>\n<\/td>\n<\/tr>\n
11A<\/td>\nventing element<\/td>\nStainless steel & bimetallic (RAU type RR)<\/td>\n<\/tr>\n
12<\/td>\nevacuation tube<\/td>\nstainless steels<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Displacement and Differential Pressure<\/h3>\n

The graphs show discharge rates at different differential pressures, *In this area, the trap discharge rate may exceed the connected piping flow rate.<\/p>\n

typical application<\/h3>\n

Reboilers, heat exchangers and other large process equipment; large absorption refrigeration; coupled with Spirax Sarco 4\" mechanical pumps.<\/p>\n

restrictive condition<\/h3>\n\n\n\n\n\n\n
PMO Maximum Working Pressure<\/th>\n450 psig (31 barg)<\/th>\n<\/tr>\n<\/thead>\n
TMO Maximum Operating Temperature<\/td>\nBimetallic option: 650\u00b0F (343\u00b0C) @ 450 psig (31 barg); 750\u00b0F (400\u00b0) @ 375 psig (26 barg)<\/td>\n<\/tr>\n
Pressure (psig), Temperature Corresponding Area Limits<\/td>\nThis product should not be used in this area; use of this product in this area may cause damage to internal components<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Valve body design conditions<\/h3>\n\n\n\n\n\n\n
PMA<\/th>\n450 psig\/max 650\u00b0F 31barg\/max 343\u00b0C<\/th>\n<\/tr>\n<\/thead>\n
Maximum permissible pressure<\/td>\n425 psig\/700\u00b0F 375 psig\/750\u00b0F 29 barg\/371\u00b0C 26 barg\/400\u00b0F<\/td>\n<\/tr>\n
TMA Maximum Allowable Temperature<\/td>\n750\u00b0F\/0-375 psig 400\u00b0C\/0-26 barg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Product Description<\/h3>\n

The trap is of the institutional float type with a carbon steel body, stainless steel internals, and horizontal connections. The bottom of the body has a mounting bracket with drilled feet. The trap has a built-in thermostatic air vent, the body is horizontally separated, and all internal parts are fully serviceable and do not require disassembly of the piping inlet or outlet.<\/p>\n

mounting<\/h3>\n

The trap should be mounted under or near the equipment drain, with a strainer mounted on the front, and a full bore shutoff valve for servicing. The mounting bracket is bolted to a horizontal support. See the Installation and Maintenance Guide for details.<\/p>\n

protect and maintain<\/h3>\n

The product can be serviced in-line without disassembling the piping. The trap must be completely isolated upstream and downstream before any maintenance is performed. Traps should be disassembled, inspected, and cleaned at regular intervals to remove the main valve assembly and air venting valve. For detailed information, see the Installation and Maintenance Guide included with the product.<\/p>\n

weights<\/h3>\n

485lb (220kg)<\/p>\n

<\/p>\n

\n

Technical Data Download<\/h3>\n
\n450.pdf<\/a>
TI-2-3041-US FT450 Float Trap in Carbon Steel (3\", 4\").pdf<\/a> <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Spirax Sarco Spirax Sarco 3\" (DN80) and 4\" (DN100) FT450 is a high capacity float...<\/p>","protected":false},"featured_media":4650,"template":"","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[24],"product_cat":[67,56],"product_tag":[57,65],"class_list":{"0":"post-4639","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-spirax-sarco","7":"product_cat-ball-float-steam-traps","8":"product_cat-steam-traps","9":"product_tag-spiraxsarco-traps","10":"product_tag-spiraxsarco-valves","12":"first","13":"instock","14":"sale","15":"shipping-taxable","16":"purchasable","17":"product-type-simple","18":"entry","19":"content-bg","20":"loop-entry"},"_links":{"self":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product\/4639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media\/4650"}],"wp:attachment":[{"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/media?parent=4639"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_brand?post=4639"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_cat?post=4639"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.shopvalves.com\/en\/wp-json\/wp\/v2\/product_tag?post=4639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}