3/4″-2500LB-RTJ*SW Welded Bonnet Globe Valve

Nominal Size 3/4 inch (DN 20)
Pressure Class Class 2500LB (equivalent to PN 420 bar)
End Connections RTJ (Ring-Type Joint) on one end, SW (Socket Weld) on the other end
Body-Bonnet Connection Welded bonnet
Structure Type Outside Screw & Yoke (OS&Y), Globe pattern

اتصل بنا

3/4″-2500LB-RTJ*SW Welded Bonnet Globe Valve

Technical Data Sheet

Product: Welded Bonnet Globe Valve
Model / Size: 3/4″ – 2500LB – RTJ × SW (Mixed Ends)

Product Description

This valve features a fully welded body-to-bonnet connection, eliminating external leakage paths associated with traditional bolted bonnet designs. It is designed for high-temperature, ultra-high-pressure, toxic, flammable, and explosive services.
The valve is supplied with mixed end connections: one end is RTJ flange, the other end is socket weld, allowing installation between a flanged component and a pipe requiring socket weld termination. The disc and seat are hardfaced with Stellite for wear resistance and reliable shut-off.

Basic Parameters

Item	المعلمة
الحجم الاسمي	3/4 inch (DN 20)
Pressure Class	Class 2500LB (equivalent to PN 420 bar)
End Connections	RTJ (Ring-Type Joint) on one end, SW (Socket Weld) on the other end
Body-Bonnet Connection	Welded bonnet
Structure Type	Outside Screw & Yoke (OS&Y), Globe pattern

معايير التصميم

Item	معيار
Design & Manufacture	API 602 (Compact steel gate, globe, and check valves) or ASME B16.34
Pressure-Temperature Rating	ASME B16.34
Flange Dimensions (RTJ)	ASME B16.5
Socket Weld Dimensions	ASME B16.11
Face-to-Face Dimensions	ASME B16.10 (applicable end-to-end length)
Inspection & Testing	API 598 (or ISO 5208)
Non-Destructive Examination	100% RT or UT of body-bonnet weld per ASME code

Bill of Materials (Typical Configuration)

Part Name	Material (Typical Options)	ملاحظات
جسم	A105 / A182 F316 / F22 (Cr-Mo)	Selected based on service conditions
قرص	A105 + hardfacing / F316 + hardfacing	Stellite 6 or 21 hardfacing
مقعد	Integral body seat with hardfacing	Stellite 6 overlay
ينبع	A182 F6a (13Cr) / F316 / F304	Precipitation hardened or austenitic SS
Bonnet	Same material as body	Welded connection
Packing	Flexible graphite with anti-extrusion rings	Low-emission packing system
Handwheel / Stem Nut	Carbon steel / Copper alloy

Dimensions & Weight (Reference)

Item	Value
Face-to-Face (L)	Approx. 140 mm (end-to-end, based on ASME B16.10 short pattern for 2500LB)
RTJ Flange End	1/2″ RTJ flange per ASME B16.5 (ring groove dimensions for 3/4″ valve)
SW End	Socket weld per ASME B16.11, socket depth approx. 10 mm
Handwheel Diameter (W)	Approx. 150 mm
Overall Height (H)	Approx. 280 mm
Approx. Weight	14 ~ 18 kg (depending on material)

Note: Dimensions and weights are typical values and may vary by manufacturer.

Operating Conditions

Item	المعلمة
Suitable Media	High-pressure steam, thermal oil, hydrogen, hydrocarbons, corrosive fluids
Temperature Range (Carbon Steel)	-29°C ~ 425°C
Temperature Range (Alloy Steel)	-29°C ~ 538°C (e.g., F22)
Temperature Range (Stainless Steel)	-196°C ~ 538°C
Max. Allowable Pressure	Approx. 42.0 MPa (420 bar) at ambient temperature (38°C)

Testing & Inspection

Shell Strength Test: 1.5 times rated pressure (hydrostatic); hold time per API 598.
High-Pressure Seat Test: 1.1 times rated pressure; no visible leakage.
Low-Pressure Pneumatic Test: 0.6 MPa compressed air; seat and packing leakage within allowable limits.
Body-Bonnet Weld Examination: 100% radiographic testing (RT) or ultrasonic testing (UT) per ASME Section VIII or equivalent.
Operational Test: Full stroke cycling under rated differential pressure to verify smooth operation.

Features & Benefits

Zero External Leakage: Full-penetration welded bonnet eliminates flange gasket leakage paths.
Ultra-High Pressure Capability: Class 2500 rating provides safety and reliability for extreme pressure systems.
Mixed End Configuration: RTJ flange on one end for high-pressure flange connections; socket weld on the other end for direct pipe welding, simplifying piping layouts.
Wear & Erosion Resistance: Disc and seat hardfaced with cobalt-based Stellite alloy for extended service life.
Fugitive Emission Compliance: Packing system can meet ISO 15848 or TA-Luft low-emission requirements.

Important Notes

Flow direction: Refer to the arrow marked on the body. If no arrow is present, confirm directionality with the manufacturer before installation.
RTJ flange: Requires the appropriate solid metal ring gasket (e.g., R18 for 1/2″ flange) and must be torqued to the specified value.
Socket weld end: Follow the approved Welding Procedure Specification (WPS) to avoid excessive weld stress that may affect valve performance.
Installation orientation: Typically installed vertically with handwheel upward unless otherwise specified.

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

منذ أكثر من 10 سنوات، كنا المورد الرائد للصمامات الصناعية للمشاريع العالمية الكبرى في إمدادات المياه والنفط والغاز وتحلية المياه.