Technical Data Sheet
Non-Rising Stem Stainless Steel Globe Valve
Product Name: Non-Rising Stem Stainless Steel Globe Valve
Model / Size: DN20, PN16
Connection: NPT-F (Female Thread)
Tipo: Globe Valve (Non-Rising Stem / Rotating Stem)
- General Information
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Item
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Descrição
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|
Nominal Diameter
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DN20 (Equivalent to 3/4″)
|
|
Nominal Pressure
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PN16
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Connection Type
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NPT Female Thread (ASME B1.20.1)
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Structure Type
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Non-rising stem (rotating stem), Straight-through pattern
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Medium Application
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Water, Oil, Steam, Weakly corrosive media
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Operating Temperature
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-20°C ~ 180°C (Adjustable based on sealing material)
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- Design Standards & Specifications
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Item
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Padrão
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Design & Manufacturing
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GB/T 12235 / JB/T 7749 / API 603
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Face-to-Face / End-to-End
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Manufacturer standard (Threaded type)
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Thread Standard
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ASME B1.20.1 (NPT)
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Pressure-Temperature Rating
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GB/T 12224 / ASME B16.34
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Inspection & Testing
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GB/T 13927 / API 598
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- Main Component Materials
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Part Name
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Material Type
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Material Grade / Standard
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Corpo
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Stainless Steel
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CF8 (304) or CF8M (316)
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Bonnet
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Stainless Steel
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CF8 (304) or CF8M (316)
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|
Tronco
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Stainless Steel
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304 or 316 (Anti-galling treated)
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Disc / Valve Plate
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Stainless Steel
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304 or 316 + Hard-faced sealing surface
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Seat Sealing Surface
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Stainless Steel / Hard Alloy
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Body integrated Stellite hard-facing or machined directly
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Packing
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Flexible Graphite / PTFE
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Self-lubricating, high-temperature resistant
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Handwheel
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Cast Iron / Malleable Iron
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Plastic-coated surface treatment
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- Technical Parameters & Dimensions (DN20 / PN16 / NPT-F)
4.1 Main Technical Parameters
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Parâmetro
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Value
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Nominal Pressure
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1.6 MPa (230 psi)
|
|
Shell Hydrostatic Test
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2.4 MPa (350 psi)
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Seat Seal Test
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1.76 MPa (255 psi)
|
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Applicable Temperature
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≤ 200°C (Water, Oil)
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Flow Characteristic
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Approx. Equal Percentage
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4.2 Dimensional Data
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Item
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Dimension (mm / inch)
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Thread Type
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NPT Female (ASME B1.20.1)
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|
Thread Size
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3/4″ NPT-F
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Thread Length (Minimum)
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Approx. 18 mm (0.75″) standard engagement
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Face-to-Face Length (L)
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Approx. 100 – 120 mm (Manufacturer standard)
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Total Height (H) (Handwheel to bottom)
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Approx. 160 – 170 mm (Non-rising design)
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Handwheel Diameter (W)
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100 mm (4″)
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*Note: Threaded end dimensions conform to ASME B1.20.1. Face-to-face dimensions may vary by manufacturer. Please verify before installation.*
- Main Features
- Non-Rising Stem Design: The stem does not rise during operation, saving installation space and protecting the stem from external damage.
- NPT Threaded Connections: Standard tapered pipe threads for leak-proof installation in piping systems.
- Corrosion Resistance: Stainless steel construction (CF8/CF8M) provides excellent resistance to corrosion.
- Reliable Sealing: Globe valve design ensures good throttling and shut-off capability with minimal leakage.
- Anti-Rotation Design: Stem-to-disc connection prevents rotation during closure, protecting sealing surfaces.
- Installation & Selection Notes
- Thread Sealing: Use appropriate thread sealant (PTFE tape or pipe dope) on male pipe threads during installation.
- Flow Direction: Install with flow direction matching the arrow on the body (typically flow below the seat).
- Wrench Flats: The valve body is equipped with wrench flats for proper installation. Do not use the handwheel as a lever for tightening.
- Special Conditions: For high-temperature steam or thermal oil applications, verify packing material suitability.
Remark: This data sheet applies to standard PN16 threaded end valves. For special working conditions, please consult the manufacturer.
GARANTIA:
A SAVVY VALVES está comprometida em oferecer produtos de qualidade excepcional e um serviço pós-venda sem preocupações. Nossas válvulas têm garantia de vida útil mínima de 12 meses, durante a qual forneceremos gratuitamente todas as peças de reposição necessárias e instruções detalhadas de manutenção. Dentro do período de garantia, caso ocorra algum dano não causado por intervenção humana, substituiremos os componentes gratuitamente e forneceremos suporte técnico profissional. Após o término da garantia, os clientes pagam apenas o custo das peças de reposição, continuando a se beneficiar de serviços de manutenção com desconto. Nosso objetivo é ajudar os clientes a reduzir custos operacionais e aumentar a eficiência da produção por meio de qualidade confiável e suporte pós-venda abrangente. Seja para consultas técnicas ou necessidades de manutenção, nossa equipe de especialistas responderá prontamente para garantir que seu sistema de válvulas mantenha o desempenho ideal o tempo todo.
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