Válvulas de Gaveta · Válvulas de Gaveta Cunha

Válvulas de Gaveta Criogênicas

Uma execução de gaveta criogênica em aço inox austenítico com assentamento macio de PTFE: DN15 a DN50, PN16 a PN64 e Classe 150 a 800, classificada -80 C a +80 C para serviço de O2, N2, Ar e LNG. É a válvula de isolamento de furo pequeno de caixas frias e gases industriais — fechamento de cunha de furo total onde uma execução de globo ou esfera não é a rota especificada.

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Última atualização: 2026-11

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Válvulas de Gaveta Criogênicas — Fotografia do produto — representativa desta execução

Especificações

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

Orientação de aplicação e seleção

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.

Perguntas frequentes

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.

Encomenda e documentação

Documentos

Solicite com o pedido o conjunto documental de que precisa — os itens habituais para esta execução (certificados de material, relatórios de ensaio segundo a norma de inspeção indicada, desenhos dimensionais) são confirmados e fornecidos com a cotação.

Cotação

Um pedido pronto para cotação indica: dimensão nominal e classe de pressão, preferência de materiais do corpo e da sede, ligação terminal, acionamento, e o fluido de serviço com a sua temperatura. Os valores típicos nesta página são gamas de referência; os valores vinculativos são confirmados na cotação.

Amostra e fornecimento

As condições de fornecimento, quantidades encomendadas e prazos são acordados por encomenda — indique o país de destino e o calendário requerido com o pedido.

Armazenamento e expedição

Armazene as válvulas com sedes e vedantes protegidos de UV, ozono e deformação, mantenha as proteções das faces de junção até à instalação e, nas execuções com sede em elastómero ou PTFE, evite o armazenamento prolongado ao ar livre — os compostos das sedes envelhecem mais depressa à luz solar direta e em condições de congelamento.

Conhecimento: guias de seleção

Conhecimento

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

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Conhecimento

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

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Conhecimento

Isolation valve selection: gate vs ball vs butterfly vs diaphragm

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