{"id":4205,"date":"2018-12-07T16:54:38","date_gmt":"2018-12-07T16:54:38","guid":{"rendered":"https:\/\/www.stvvalves.com\/?post_type=product&p=4205"},"modified":"2025-02-17T18:19:47","modified_gmt":"2025-02-17T10:19:47","slug":"forged-steel-bellows-gate-valve-300lb-large-female-flange","status":"publish","type":"product","link":"https:\/\/www.stvvalves.com\/it\/products\/forged-steel-bellows-gate-valve-300lb-large-female-flange\/","title":{"rendered":"Valvola a saracinesca a soffietto in acciaio forgiato da 300 libbre con flangia femmina grande"},"content":{"rendered":"

Our Services
\nPre-sale service:
\n1.We have full stock and can deliver within short time.
\n2.OEM and ODM order are accepted, Any kind of logo printing or design are available.
\n3.Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you.
\n4.All of our products are produced by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.
\nAfter you choose:
\n1. We will count cheapest shipping cost and make invoice to you at once.
\n2. Check quality again, then send out to you at 1-2 working day after your payment
\n3. Email you the tracking no., and help to chase the parcels until it arrive you.
\nAfter-sale service:
\n1.We are very glad that customers give us some suggestion for price and products.
\n2.If you have any question,please contact us freely by E-mail or Telephone.<\/p>\n

 <\/p>\n

What is a bellows sealed valve?<\/p>\n

A\u00a0Bellow Sealed Valve<\/b>\u00a0is a industrial process\u00a0valve<\/b>\u00a0designed to eliminate\u00a0valve<\/b>\u00a0leakage and are also known as ‘Zero Leak\u00a0Valve<\/b>‘ or ‘Emission Free\u00a0Valve<\/b>. … A\u00a0bellow<\/b>\u00a0is a long accordion-like tube. As the\u00a0valve<\/b>\u00a0stem strokes, the\u00a0bellow<\/b>\u00a0expands or compresses with the stroke movement..<\/span><\/p>\n

 <\/p>\n

Why bellow seal valves are used?<\/p>\n

The use of a\u00a0bellows seal valve<\/b><\/span>\u00a0significantly reduces external leakage. By covering the circumference of the\u00a0valve<\/b>\u00a0stem with\u00a0bellows<\/b>, leakage from the gland<\/span> components is reduced.<\/p>\n

 <\/p>\n

How Do Bellows Seal Valves Work<\/b>? <\/span><\/p>\n

These\u00a0valves<\/b>\u00a0feature an accordion like\u00a0bellows<\/b>\u2014i.e., the\u00a0bellows<\/b>\u00a0cartridge component, welded to the\u00a0valve<\/b>\u00a0stem and bonnet. During the\u00a0valve<\/b>\u00a0stroke the\u00a0bellows<\/b>\u00a0compress or expand along with the sliding stem’s linear motion with little to no friction.<\/span><\/p>\n\n\n\n\n\n\n\n
DN 15 – DN 50<\/b><\/strong><\/span><\/td>\n<\/tr>\n
150# \/ 300#<\/b><\/strong><\/span><\/td>\n<\/tr>\n
<\/td>\nC.S<\/b><\/strong><\/span><\/td>\nS.S<\/b><\/strong><\/span><\/td>\nLow temp.<\/b><\/strong><\/span><\/td>\n<\/tr>\n
T min.<\/b><\/strong><\/span><\/td>\n-29\u00b0C<\/b><\/strong><\/span><\/td>\n-29\u00b0C<\/b><\/strong><\/span><\/td>\n-29\u00b0C<\/b><\/strong><\/span><\/td>\n<\/tr>\n
T max.<\/b><\/strong><\/span><\/td>\n+425\u00b0C<\/b><\/strong><\/span><\/td>\n+538\u00b0C<\/b><\/strong><\/span><\/td>\n+425\u00b0C<\/b><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n
Materials<\/b><\/strong><\/span><\/td>\nA105 & LF2<\/b><\/strong><\/span><\/td>\nF316\/F304<\/b><\/strong><\/span><\/td>\n<\/tr>\n
150#<\/span><\/td>\n300#<\/span><\/td>\n150#<\/span><\/td>\n300#<\/span><\/td>\n<\/tr>\n
HYDRO<\/span><\/td>\nSHELL<\/span><\/td>\n30<\/span><\/td>\n77<\/span><\/td>\n29<\/span><\/td>\n75<\/span><\/td>\n<\/tr>\n
SEAT<\/td>\n22<\/td>\n57<\/td>\n21<\/td>\n55<\/td>\n<\/tr>\n
AIR<\/td>\nSEAT<\/td>\n7<\/td>\n7<\/td>\n7<\/td>\n7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/h4>\n

Testing Pressure in bar (API 598) :<\/h4>\n\n\n\n\n\n\n\n\n\n\n
DN<\/b><\/strong><\/span><\/td>\nL<\/b><\/strong><\/span><\/td>\nH closed<\/b><\/strong><\/span><\/td>\n\u00d8D<\/b><\/strong><\/span><\/td>\n\u00d8C<\/b><\/strong><\/span><\/td>\nCv<\/b><\/strong><\/span><\/td>\nWeight (approx.)<\/b><\/strong><\/span><\/td>\n<\/tr>\n
[mm]<\/td>\n[mm]<\/td>\n[mm]<\/td>\n[mm]<\/td>\n<\/td>\n[kgs]<\/td>\n<\/tr>\n
15<\/td>\n86<\/td>\n200<\/td>\n100<\/td>\n9<\/td>\n2.5<\/td>\n2.5<\/td>\n<\/tr>\n
20<\/td>\n92<\/td>\n210<\/td>\n100<\/td>\n12<\/td>\n3.5<\/td>\n2.5<\/td>\n<\/tr>\n
25<\/td>\n106<\/td>\n220<\/td>\n100<\/td>\n17<\/td>\n6<\/td>\n4<\/td>\n<\/tr>\n
32<\/td>\n130<\/td>\n290<\/td>\n150<\/td>\n23<\/td>\n12<\/td>\n7.5<\/td>\n<\/tr>\n
40<\/td>\n130<\/td>\n300<\/td>\n150<\/td>\n25<\/td>\n12<\/td>\n8<\/td>\n<\/tr>\n
50<\/td>\n145<\/td>\n315<\/td>\n150<\/td>\n30<\/td>\n28<\/td>\n13.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Modello:WZ41Y-300LB<\/p>\n

Le valvole a saracinesca a soffietto in acciaio forgiato vengono utilizzate principalmente sulle tubazioni di vari sistemi di centrali termiche e il mezzo per tagliare o collegare i mezzi della tubazione \u00e8 adatto per: Acqua, vapore e altri mezzi non corrosivi per forgiatura di valvole in acciaio rispetto ad altri prodotti per valvole sono caratterizzati da alta temperatura e alta pressione, design autosigillante unico, maggiore \u00e8 la pressione, pi\u00f9 affidabile \u00e8 la tenuta. A causa delle caratteristiche tecniche delle prestazioni, le condizioni speciali delle condizioni di lavoro fanno s\u00ec che il prodotto costituisca anche una caratteristica che non pu\u00f2 essere sostituita da altri prodotti.<\/p>\n

Caratteristiche e vantaggi
\n\u25cf Un design compatto ma estremamente robusto per servizi ad alta pressione-temperatura.
\n\u25cf Il solido cuneo in lega CoCr (opzionale) garantisce basso attrito e lunga durata.
\n\u25cf Per le valvole Classe 1500 e per servizio vapore, le sedi sono saldate a tenuta al corpo.
\n\u25cf Gli anelli di tenuta sono precompressi a 4000 psi per fornire una tenuta ad alta integrit\u00e0.
\n\u25cf Per le valvole con coperchio saldato, il coperchio \u00e8 avvitato e serrato a un valore di coppia progettato e il giunto del coperchio del corpo \u00e8 saldato a resistenza, offrendo una doppia protezione contro le perdite. (Filettature corpo\/coperchio e saldature di rinforzo).
\n\u25cf Il cuneo completamente guidato riduce l'usura sulle superfici di seduta.
\n\u25cf Trasmissione dello stelo in 2 pezzi riparabile.
\n\u25cf Disponibili anche valvole a saracinesca a scorrimento parallelo.
\n\u25cf Disponibile design opzionale con doppia baderna, connessione antiperdita, caricamento live e scarico della baderna per una facile rimozione della vecchia baderna.<\/p>\n

Valvola a saracinesca con flangia sigillata a soffietto in acciaio forgiato<\/p>\n

Dettagli del prodotto
\nDimensioni: 1\/2\u2033- 2\u2033
\nPressione: classe 150LB-600LB
\nMateriale: A105, F22, LF2, F304, F316, F304L, F316L
\nStandard di progettazione: API602, BS 5352
\nStandard faccia a faccia: ANSI B16.10
\nStandard flangia: ANSI B16.5
\nTipo di foro: foro ridotto, foro pieno.<\/p>\n

 <\/p>\n

STV Valve Technology Group Co., Ltd \u00e8 un leader professionale Cina API Valvola a saracinesca sigillata a soffietto in acciaio forgiato, Valvola a saracinesca con tenuta a soffietto, Valvole con tenuta a soffietto, Valvola a saracinesca a soffietto Cina, Valvola a saracinesca con flangia sigillata a soffietto in acciaio forgiato, Valvole a tenuta a soffietto in acciaio forgiato, Forgiato Valvola a saracinesca con tenuta a soffietto in acciaio, produttore di valvole a saracinesca sigillate a soffietto in acciaio forgiato con alta qualit\u00e0 e prezzo competitivo.<\/p>\n

Si prega di contattare il nostro sales@stvvalve.com per altri materiali e dettagli.<\/p>\n

Foglio degli appuntamenti:
\nValvola a saracinesca a soffietto in acciaio forgiato da 300 libbre con flangia femmina grande<\/a><\/p>","protected":false},"featured_media":4207,"template":"","meta":[],"product_brand":[],"product_cat":[82,44],"product_tag":[361,360,357,364,363,358,359,362],"class_list":{"0":"post-4205","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bellow-seal-gate-valve","7":"product_cat-gate-valve","8":"product_tag-api-forged-steel-bellows-sealed-gate-valve","9":"product_tag-bellows-seal-gate-valve","10":"product_tag-bellows-seal-valves","11":"product_tag-china-bellows-gate-valve","12":"product_tag-forged-steel-bellow-sealed-flange-gate-valve","13":"product_tag-forged-steel-bellow-sealed-valves","14":"product_tag-forged-steel-bellows-seal-gate-valve","15":"product_tag-forged-steel-bellows-sealed-gate-valve","17":"first","18":"instock","19":"shipping-taxable","20":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/product\/4205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/media\/4207"}],"wp:attachment":[{"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/media?parent=4205"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/product_brand?post=4205"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/product_cat?post=4205"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.stvvalves.com\/it\/wp-json\/wp\/v2\/product_tag?post=4205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}