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)
Type: Globe Valve (Non-Rising Stem / Rotating Stem)
- General Information
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Item
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Description
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Nominal Diameter
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DN20 (Equivalent to 3/4″)
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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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Standard
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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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Body
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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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Stem
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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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Parameter
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Value
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Nominal Pressure
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1.6 MPa (230 psi)
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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.
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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