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 | Parametr |
Rozmiar nominalny | 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 |
- Standardy projektowe
Item | Standard |
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) | Remarks |
Ciało | A105 / A182 F316 / F22 (Cr-Mo) | Selected based on service conditions |
Disc | A105 + hardfacing / F316 + hardfacing | Stellite 6 or 21 hardfacing |
Siedziba | Integral body seat with hardfacing | Stellite 6 overlay |
Trzon | 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 | Parametr |
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.
GWARANCJA:
SAVVY VALVES zobowiązuje się do dostarczania wyjątkowej jakości produktów i bezproblemowej obsługi posprzedażowej. Gwarantujemy, że nasze zawory zapewnią minimalny okres eksploatacji wynoszący 12 miesięcy, podczas którego dostarczymy bezpłatnie wszystkie niezbędne części zamienne i szczegółowe instrukcje dotyczące konserwacji. W okresie gwarancyjnym, jeśli wystąpią jakiekolwiek uszkodzenia niespowodowane przez człowieka, wymienimy komponenty bezpłatnie i zapewnimy profesjonalne wsparcie techniczne. Po wygaśnięciu gwarancji klienci muszą zapłacić jedynie za koszt części zamiennych, nadal korzystając z usług konserwacyjnych po obniżonych cenach. Naszym celem jest pomoc klientom w obniżeniu kosztów operacyjnych i zwiększeniu wydajności produkcji dzięki niezawodnej jakości i kompleksowemu wsparciu posprzedażowemu. Niezależnie od tego, czy chodzi o zapytania techniczne, czy potrzeby konserwacyjne, nasz zespół ekspertów odpowie szybko, aby zapewnić, że Twój system zaworów zawsze będzie utrzymywał optymalną wydajność.