Valvole a saracinesca · Valvole a saracinesca a cuneo

Valvole a saracinesca criogeniche

Un'esecuzione di saracinesca criogenica in acciaio inossidabile austenitico con seduta morbida in PTFE: da DN15 a DN50, PN16 a PN64 e Class 150 a 800, classificata da -80 °C a +80 °C per servizio di O2, N2, Ar e LNG. È la valvola di intercettazione a piccolo passaggio per cold box e gas industriali — chiusura a cuneo a passaggio totale dove un'esecuzione a globo o a sfera non è la via specificata.

Fa parte della Valvole a saracinesca a cuneo famiglia

Ultimo aggiornamento: 2026-11

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Valvole a saracinesca criogeniche — Foto del prodotto — rappresentativa di questa esecuzione

Specifiche

Valve body material	SS304, SS316, SS304L, SS316L
bonnet material	Stainless Steel
Stem material	Stainless Steel
packing	PTFE
disc face ring	PTFE
Nominal valve connection size	DN15 to DN50
Pressure class / nominal rating designation	PN16, PN25, PN40, PN64, Class150, Class300, Class600, Class800
applicable medium	O2, N2, Ar, LNG
Service temperature range	-80C to +80C
end to end class800 bolted bonnet	NPS 1/2: 76 mm \| NPS 3/4: 86 mm \| NPS 1: 102 mm \| NPS 1-1/4: 118 mm \| NPS 1-1/2: 118 mm \| NPS 2: 132 mm (end-to-end length, Class 800 bolted bonnet cryogenic extended-bonnet execution, regular port size, full port one size smaller, threaded and socket weld ends, AP1602/API 602)
bore diameter class800 bolted bonnet	NPS 1/2: 9.5 mm \| NPS 3/4: 12.7 mm \| NPS 1: 17.5 mm \| NPS 1-1/4: 23.8 mm \| NPS 1-1/2: 28.6 mm \| NPS 2: 36.5 mm (bore diameter, Class 800 bolted bonnet cryogenic extended-bonnet execution, regular port size, full port one size smaller, threaded and socket weld ends, AP1602/API 602)
center to top open class800 bolted bonnet	NPS 1/2: 403 mm \| NPS 3/4: 428 mm \| NPS 1: 470.5 mm \| NPS 1-1/4: 499.3 mm \| NPS 1-1/2: 503.4 mm \| NPS 2: 549.6 mm (center-to-top (open) height, Class 800 bolted bonnet cryogenic extended-bonnet execution, regular port size, full port one size smaller, threaded and socket weld ends, AP1602/API 602)
handwheel class800 bolted bonnet	NPS 1/2: 90 mm \| NPS 3/4: 110 mm \| NPS 1: 150 mm \| NPS 1-1/4: 150 mm \| NPS 1-1/2: 150 mm \| NPS 2: 180 mm (handwheel diameter, Class 800 bolted bonnet cryogenic extended-bonnet execution, regular port size, full port one size smaller, threaded and socket weld ends, AP1602/API 602)
weight class800 bolted bonnet	NPS 1/2: 3 kg \| NPS 3/4: 3.7 kg \| NPS 1: 5.3 kg \| NPS 1-1/4: 8.5 kg \| NPS 1-1/2: 8.5 kg \| NPS 2: 10.8 kg (approximate weight, Class 800 bolted bonnet cryogenic execution, regular port size, full port one size smaller)
end to end class150 overall end flange	NPS 1/2: 108 mm \| NPS 3/4: 117 mm \| NPS 1: 127 mm \| NPS 1-1/2: 165 mm \| NPS 2: 178 mm (end-to-end length, Class 150 overall-end flange)
end to end class300 overall end flange	NPS 1/2: 140 mm \| NPS 3/4: 152 mm \| NPS 1: 165 mm \| NPS 1-1/2: 190 mm \| NPS 2: 216 mm (end-to-end length, Class 300 overall-end flange)
end to end class600 overall end flange	NPS 1/2: 165 mm \| NPS 3/4: 190 mm \| NPS 1: 216 mm \| NPS 1-1/2: 241 mm \| NPS 2: 292 mm (end-to-end length, Class 600 overall-end flange)
bore diameter class150 300 600 overall end flange	NPS 1/2: 9.5 mm \| NPS 3/4: 12.7 mm \| NPS 1: 17.5 mm \| NPS 1-1/2: 28.6 mm \| NPS 2: 36.5 mm (bore diameter, Class 150/300/600 overall-end flange, bolted bonnet, cryogenic execution, regular port, ASME B16.10/B16.5)
center to top open class150 300 600 overall end flange	NPS 1/2: 403 mm \| NPS 3/4: 428 mm \| NPS 1: 470.5 mm \| NPS 1-1/2: 503.4 mm \| NPS 2: 549.6 mm (center-to-top (open) height, Class 150/300/600 overall-end flange, bolted bonnet, cryogenic execution, regular port, ASME B16.10/B16.5)
handwheel class150 300 600 overall end flange	NPS 1/2: 90 mm \| NPS 3/4: 110 mm \| NPS 1: 150 mm \| NPS 1-1/2: 150 mm \| NPS 2: 180 mm (handwheel diameter, Class 150/300/600 overall-end flange, bolted bonnet, cryogenic execution, regular port, ASME B16.10/B16.5)
weight class150 overall end flange	NPS 1/2: 4.5 kg \| NPS 3/4: 5.5 kg \| NPS 1: 7 kg \| NPS 1-1/2: 13 kg \| NPS 2: 18.5 kg (approximate weight, Class 150 overall-end flange)
weight class300 overall end flange	NPS 1/2: 5 kg \| NPS 3/4: 6.2 kg \| NPS 1: 8 kg \| NPS 1-1/2: 12.5 kg \| NPS 2: 20.5 kg (approximate weight, Class 300 overall-end flange)
weight class600 overall end flange	NPS 1/2: 5.6 kg \| NPS 3/4: 7 kg \| NPS 1: 9 kg \| NPS 1-1/2: 15.5 kg \| NPS 2: 21.5 kg (approximate weight, Class 600 overall-end flange)
Design standards	API 602 (compact forged execution, regular port), AP1602 (regular and full port), ASME B16.10 (structure length, overall-end flange), ASME B16.5 (overall-end flange), Extended bonnet cryogenic execution

Indicazioni di applicazione e selezione

This is a small-diameter (DN15-DN50) cryogenic isolation execution; larger cryogenic lines need the wider gate family or dedicated cryogenic executions. Match the class rating (up to Class 800) to the system design pressure and verify that the -80 to +80 C window covers the actual gas and ambient duty, including warm-up transients.

Domande frequenti

Which media is this execution rated for?

The page states O2, N2, Ar and LNG as applicable media between -80 and +80 C, with wetted parts in SS304/SS316/SS304L/SS316L, PTFE packing and a PTFE disc face ring.

What sizes and ratings are covered?

DN15 to DN50 at PN16/PN25/PN40/PN64 and Class 150/300/600/800, with a full NPS 1/2 to 2 dimension and weight table on the page.

Why a gate valve for cryogenic service?

Full-bore wedge shutoff avoids the tortuous flow path of globe executions and keeps pressure drop low on gas distribution; austenitic stainless bodies retain toughness at cryogenic temperature where carbon steel would embrittle. Confirm extended-bonnet length against pipeline insulation at quotation.

Ordinazione e documentazione

Documenti

Chiedi con la richiesta il pacchetto di documentazione che ti serve — gli elementi tipici per questa esecuzione (certificati dei materiali, rapporti di prova secondo la norma di ispezione indicata, disegni dimensionali) vengono confermati e forniti con il preventivo.

Preventivo

Una richiesta pronta per il preventivo indica: dimensione nominale e classe di pressione, preferenza di materiali del corpo e della sede, collegamento finale, azionamento, e il fluido di servizio con la sua temperatura. I valori tipici di questa pagina sono gamme di riferimento; i valori vincolanti vengono confermati in fase di preventivo.

Campione e fornitura

Condizioni di fornitura, quantità ordinate e tempi di consegna sono concordati per ordinativo — indica il paese di destinazione e il calendario richiesto con la richiesta.

Stoccaggio e spedizione

Conserva le valvole con sedi e tenute protette da UV, ozono e deformazione, mantieni le protezioni delle facce di tenuta fino all'installazione e, per le esecuzioni con sede in elastomero o PTFE, evita lo stoccaggio prolungato all'aperto — i composti delle sedi invecchiano più rapidamente al sole diretto e al gelo.

Conoscenza: guide di selezione

Conoscenza

Valve body materials: cast iron, ductile iron, carbon steel and stainless steel

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Conoscenza

Valve end connections: flanged RF/RTJ, butt-weld, socket-weld and threaded

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Conoscenza

Isolation valve selection: gate vs ball vs butterfly vs diaphragm

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