DN20-PN16 NRS SS Globe Valve

Nominal Diameter DN20 (Equivalent to 3/4″)
Nominal Pressure PN16
Connection Type NPT Female Thread (ASME B1.20.1)
Structure Type Non-rising stem (rotating stem), Straight-through pattern
Medium Application Water, Oil, Steam, Weakly corrosive media
Operating Temperature -20°C ~ 180°C (Adjustable based on sealing material)

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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)
يكتب: Globe Valve (Non-Rising Stem / Rotating Stem)

General Information

Item	وصف
Nominal Diameter	DN20 (Equivalent to 3/4″)
Nominal Pressure	PN16
Connection Type	NPT Female Thread (ASME B1.20.1)
Structure Type	Non-rising stem (rotating stem), Straight-through pattern
Medium Application	Water, Oil, Steam, Weakly corrosive media
Operating Temperature	-20°C ~ 180°C (Adjustable based on sealing material)

Design Standards & Specifications

Item	معيار
Design & Manufacturing	GB/T 12235 / JB/T 7749 / API 603
Face-to-Face / End-to-End	Manufacturer standard (Threaded type)
Thread Standard	ASME B1.20.1 (NPT)
Pressure-Temperature Rating	GB/T 12224 / ASME B16.34
Inspection & Testing	GB/T 13927 / API 598

Main Component Materials

Part Name	Material Type	Material Grade / Standard
جسم	Stainless Steel	CF8 (304) or CF8M (316)
Bonnet	Stainless Steel	CF8 (304) or CF8M (316)
ينبع	Stainless Steel	304 or 316 (Anti-galling treated)
Disc / Valve Plate	Stainless Steel	304 or 316 + Hard-faced sealing surface
Seat Sealing Surface	Stainless Steel / Hard Alloy	Body integrated Stellite hard-facing or machined directly
Packing	Flexible Graphite / PTFE	Self-lubricating, high-temperature resistant
Handwheel	Cast Iron / Malleable Iron	Plastic-coated surface treatment

Technical Parameters & Dimensions (DN20 / PN16 / NPT-F)

4.1 Main Technical Parameters

المعلمة	Value
Nominal Pressure	1.6 MPa (230 psi)
Shell Hydrostatic Test	2.4 MPa (350 psi)
Seat Seal Test	1.76 MPa (255 psi)
Applicable Temperature	≤ 200°C (Water, Oil)
Flow Characteristic	Approx. Equal Percentage

4.2 Dimensional Data

Item	Dimension (mm / inch)
Thread Type	NPT Female (ASME B1.20.1)
Thread Size	3/4″ NPT-F
Thread Length (Minimum)	Approx. 18 mm (0.75″) standard engagement
Face-to-Face Length (L)	Approx. 100 – 120 mm (Manufacturer standard)
Total Height (H) (Handwheel to bottom)	Approx. 160 – 170 mm (Non-rising design)
Handwheel Diameter (W)	100 mm (4″)

*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.

ضمان:

تلتزم شركة سافي فالفز بتقديم منتجات عالية الجودة وخدمة ما بعد البيع مريحة. نضمن لصماماتنا عمر خدمة لا يقل عن ١٢ شهرًا، نوفر خلالها جميع قطع الغيار اللازمة وتعليمات الصيانة المفصلة مجانًا. خلال فترة الضمان، في حال حدوث أي ضرر غير بشري، نستبدل المكونات مجانًا ونقدم دعمًا فنيًا احترافيًا. بعد انتهاء الضمان، يدفع العميل فقط تكلفة قطع الغيار، مع الاستفادة من خدمات الصيانة المخفضة. هدفنا هو مساعدة عملائنا على خفض تكاليف التشغيل وتحسين كفاءة الإنتاج من خلال جودة موثوقة ودعم شامل لما بعد البيع. سواءً للاستفسارات الفنية أو احتياجات الصيانة، سيستجيب فريق خبرائنا على الفور لضمان الحفاظ على الأداء الأمثل لنظام صماماتك في جميع الأوقات.

منتجات البيع الساخنة

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