J61Y Globe Valve | High-Temp High-Pressure Forged Steel | Butt-Weld | Stellite Seal

J61Y Globe Valve - high-temp/high-pressure forged steel globe valve, mainly used to cut off or connect medium in industrial pipelines. Integrated forged body + butt-weld ends (ANSI B16.25) + Stellite hardfaced seal, adapts to harsh HP/HT/corrosive environments. Multiple models (J61Y-200, J61Y-250, J61Y-320, J61Y-P54100(V), J61Y-P54140(V)) and customizable specs meet diverse industrial needs. Body WCB/A105/WC6/WC9/F304/F316/F91/F92, PN1.6–42MPa (Class 150–2500), -29~650℃. Stem surface-hardened, compact low-height, 60°/45° disc angle. Drive: manual/bevel/electric/pneumatic/hydraulic. DN10–300. Media: water/steam/oil/gas. Standards GB/DIN/API/ANSI/JB/T3595/DL/T531. For thermal power drain/discharge, petrochemical lines, hydraulic systems, metallurgy, shipbuilding, gas - stable efficient flow control, reduced risk, improved efficiency.

1. Integrated Forged Body + Butt-Weld Connection - WCB/A105/WC6/WC9/F304/F316/F91/F92, High Strength, ANSI B16.25: Adopts integrated forging process for the valve body - solid steel billet hot-forged under high pressure, featuring high strength, beautiful appearance, reliable material performance, no casting defects (porosity/shrinkage/inclusions), refined grain structure. Forging ratio ≥3:1, grain flow aligned to stress contours, 100% ultrasonic testing (UT) for internal defects. The valve body and pipeline are connected by butt welding (per ANSI B16.25 / user-provided dimensions), ensuring tight connection and preventing medium leakage under high pressure conditions - no flange gasket, no bolt holes, continuous high-integrity pressure boundary. Valve body material includes WCB, A105 carbon steel, WC6/WC9 (12Cr1MoV chrome-molybdenum-vanadium steel), F304/F316 stainless steel, F91/F92 high-alloy steel, selectable per different working conditions. All materials supplied with MTR (Material Test Report) and heat-number traceability. The forged construction allows higher pressure ratings (up to Class 2500) and temperature ratings (up to 650℃) than equivalent cast valves.

2. Stellite Hardfaced Seal - Cobalt-Based Alloy Surfacing, Precision Grinding + Manual Running-In, >90% Fit, Zero Leak: The sealing surface is surfaced with cobalt-based hard alloy (Stellite) - deposited by welding process onto the valve disc and seat ring, then precision ground and manually run-in (lapped) to ensure perfect mating. This ensures high hardness (HRC 40–45), excellent wear resistance, and corrosion resistance - critical for high-temperature steam, high-pressure oil, and abrasive media where soft seals would fail. The fit degree of the sealing surface exceeds 90% (verified by dye penetrant inspection and blue contact test), achieving zero leakage (bubble-tight shut-off) and effectively extending the service life of the valve. Stellite seal maintains sealing integrity at temperatures up to 650℃ and resists galling during frequent operation. The metal-to-metal hard seal is fire-safe and suitable for hazardous media. Seat ring can be integral or welded/removable per model.

3. High Temperature & High Pressure Resistance - -29~650℃, PN1.6–42MPa (Class 150–2500), Extreme Steam/Oil: Suitable for working temperatures ranging from -29℃ to 650℃ (the P57/170V model rated ≤570℃ for continuous high-temp service) and nominal pressure from PN1.6MPa to PN42MPa (Class 150 to Class 2500) - can stably operate in extreme environments such as high-temperature superheated steam pipelines and high-pressure oil pipelines. The forged alloy body (WC6/WC9/F91/F92) provides excellent high-temperature strength and creep resistance; the Stellite seal maintains hardness at elevated temperatures; the surface-hardened stem resists high-temperature oxidation and galling. Pressure-temperature ratings per ASME B16.34 / GB standards for each body material class. The J61Y-P54100(V) and J61Y-P54140(V) models are specifically designed for power station high-temperature high-pressure steam service (P54 = 540℃, 100/140 = 100/140 kgf/cm²). These valves are the standard choice for thermal power plant main steam, reheat steam, and boiler feedwater systems where reliable shut-off at extreme conditions is mandatory.

4. Durable Surface-Hardened Stem - 2Cr13/1Cr17Ni2/25Cr2MoV, Anti-Scratch/Corrosion, Smooth Operation: The valve stem undergoes surface hardening treatment (nitriding, induction hardening, or chrome plating per material), which is scratch-resistant and corrosion-resistant, avoiding damage caused by long-term use and frequent operation, ensuring smooth opening and closing of the valve. The valve stem material is 2Cr13 (13% Cr martensitic stainless, general service), 1Cr17Ni2 (17Cr-2Ni, higher strength/corrosion), 25Cr2MoV (chrome-moly-vanadium, high-temperature power station service), matching the performance of the valve body and suitable for the operating temperature. Stem is precision-ground (Ra ≤0.8μm on sealing/guide surfaces), straightness verified, with anti-corrosion surface treatment. The rising stem design provides visual position indication (open/closed). Stem threads are outside the body (OS&Y or inside-screw per model), never contacting process medium - preventing thread corrosion and galling. Backseat design optional for online packing replacement.

5. Compact Structure + Low Flow Resistance - Low Height, 60°/45° Disc Angle, Anti-Sedimentation, Easy Install/Maintenance: With a compact design, small height, and good opening and closing performance, the valve is convenient for installation and maintenance - fits in tight piping runs, reduces piping support load, and is ideal for power plant and industrial installations where space is limited. The 60° or 45° included angle between the valve disc and the medium flow direction can reduce medium flow resistance (lower pressure drop than conventional 90° globe valves) and prevent sundry sedimentation (debris slides off the angled disc rather than accumulating on the seat) - especially beneficial for drain/discharge pipelines containing particulate matter. The S-shaped (globular) flow passage provides smooth flow transition. The valve can be installed in any orientation (preferably upright for stem operation), with flow direction arrow marked (unidirectional - flow under the disc for optimal sealing). Bolted bonnet design allows in-line maintenance (unlike welded-bonnet valves).

6. Multiple Drive Modes - Manual/Bevel Gear/Electric/Pneumatic/Hydraulic, Remote + On-Site, Wide Automation: Available in manual (handwheel), bevel gear transmission (umbrella gear for large sizes/high torque), electric (multi-turn actuator for remote automation), pneumatic (piston actuator for fast on/off), and hydraulic driving modes - which can realize remote control (DCS/PLC/SCADA) and on-site operation, adapting to different automation levels of industrial systems. Manual mode: standard handwheel, simplest, lowest cost, for sizes where torque is manageable. Bevel gear: for DN≥100 or high-pressure valves where manual torque is too high, reduces operating effort. Electric: multi-turn actuator with on/off or 4-20mA modulating, position feedback, torque protection, manual override - for automated plants. Pneumatic/hydraulic: for fast-acting emergency shut-off or high-cycle service. All drive modes mounted via standard yoke/flange, interchangeable. The J61Y series is widely used in thermal power, petroleum, chemical, hydraulic, metallurgy, shipbuilding, and gas transmission - providing stable efficient flow control, reducing operational risks, and improving production efficiency.

J61Y Globe Valve: forged S-body + butt-weld ends, bolted bonnet, rising stem, disc/plug, Stellite seat, handwheel/actuator. Turning rotates stem - rises/lowers, disc moves linearly. Opening: disc lifts, flow area increases. Closing: disc seats Stellite hardfaced ring - metal-to-metal seal, zero leak. 60°/45° disc angle reduces flow resistance, prevents sediment buildup. Stem surface-hardened, smooth, anti-scratch. Butt-weld ends welded to pipeline - no flange leak, high-integrity HP/HT boundary. On/off shut-off service (not throttling). DN10–300, PN1.6–42MPa, -29~650℃. GB/DIN/API/ANSI/JB/T3595/DL/T531.

Thermal Power Plants - Unit Drain/Discharge Pipelines, Steam Pipelines, Boiler Feedwater Systems: The J61Y Globe Valve is extensively used in thermal power plants for drain and discharge pipelines of thermal power units (boiler drain, superheater drain, reheater drain, turbine drain), main steam and reheat steam pipelines, and boiler feedwater systems - where high-temperature high-pressure steam and water require reliable shut-off. The J61Y-P54100(V) and J61Y-P54140(V) models are specifically designed for power station service (540℃, 100/140 kgf/cm²). The Stellite hardfaced seal handles superheated steam to 650℃; the forged WC6/WC9/F91/F92 body provides high-temperature creep strength; the 60°/45° disc angle prevents sediment buildup in drain lines containing particulate. Butt-weld connection provides leak-free joint for high-pressure steam piping (ASME B31.1 power piping). Manual or electric drive per automation level.

Petroleum & Chemical - Oil Pipelines, Chemical Reaction Equipment, Raw Material Transmission Lines: Applied in oil pipelines (crude oil, refined product, high-pressure oil transmission), chemical reaction equipment (reactor inlet/outlet, distillation column, high-pressure separator), and medium transmission pipelines for various chemical raw materials - ensuring safe and stable operation of production process. The forged WCB/A105 body handles general oil service; SS304/SS316 handles corrosive chemicals; WC6/WC9/F91 handles high-temperature hydrocarbons. Stellite seal resists abrasion and corrosion from chemical media. Butt-weld connection prevents leakage of hazardous/expensive chemicals. Multiple drive modes (manual/electric/pneumatic) adapt to different plant automation. The valve provides reliable shut-off for process isolation, emergency shutdown, and maintenance bypass.

Hydraulic & High-Pressure Systems - Hydraulic Station Pipelines, High-Pressure Water Supply, Power Transmission: Used in hydraulic station pipelines (hydraulic oil, high-pressure hydraulic circuits), high-pressure water supply systems (high-pressure water injection, descaling water, fire water), and power transmission pipelines - where high pressure requires robust forged construction and reliable sealing. The forged body withstands PN up to 42MPa (Class 2500); the Stellite seal handles high-velocity hydraulic fluid; the surface-hardened stem resists frequent cycling. Compact low-height design fits hydraulic skids and tight installations. Manual or hydraulic drive for fast response. The valve is suitable for high-pressure water, hydraulic oil, and other non-corrosive or slightly corrosive media.

Steel & Metallurgy - High-Temp Steam Pipelines, Cooling Water Systems in Smelting Processes: Used in high-temperature steam pipelines (process steam, heating steam, steam for metallurgical processes) and cooling water systems in steel smelting processes (blast furnace, converter, rolling mill cooling) - adapting to harsh working environments such as high temperature, dust, and thermal cycling. The forged WCB/alloy body with Stellite hardfaced seats resists erosion from particle-laden cooling water and high-temperature steam; the welded/bolted body withstands thermal cycling and mechanical vibration in steel mills; the compact design fits dense piping in steel plants. Manual or electric drive allows remote control from control rooms, removing operators from high-temperature/dusty areas.

Shipbuilding, Gas & Other Industrial - Shipbuilding Pipelines, Natural Gas Transmission, General Industrial Shut-Off: Used in shipbuilding (shipboard steam, water, oil pipelines - requiring compact, reliable, marine-grade valves), natural gas transmission (gas gathering, distribution, high-pressure gas pipelines - requiring zero leakage and fire-safe metal seal), and other industrial pipelines that require reliable shut-off and flow control. The forged body and Stellite seal provide fire-safe performance (metal-to-metal seal survives fire); the butt-weld connection provides leak-free joint for gas service; multiple drive modes adapt to marine and industrial automation. Standards include GB, DIN, API, ANSI, JB/T 3595, E101, DL/T 531 - meeting global industrial requirements. The valve is suitable for water, steam, oil, gas, and other non-corrosive or slightly corrosive media.

Every J61Y Globe Valve: Forging - integrated forged body, ≥3:1, UT. Material - WCB/A105/WC6/WC9/F304/F316/F91/F92, MTR 3.1, heat traceable. Hardfacing - Stellite surfacing disc/seat, grinding + running-in, fit >90%, HRC40–45, PT. Stem - 2Cr13/1Cr17Ni2/25Cr2MoV, surface hardening, anti-scratch. Butt-weld - ANSI B16.25 bevel, OD checked. Assembly - full stroke, no binding. Pressure - 100% shell 1.5×PN, seat 1.1×PN (38℃), zero leak. Functional - open/close cycle, smooth. Surface - CS epoxy, SS pickled. Marking - permanent model/material/size/pressure/serial. Standards GB/DIN/API/ANSI/JB/T3595/DL/T531. Docs - MTR, hydrotest, cert. Lead: 25–45 days. Warranty: 18 months.

Q1: What does J61Y mean in the valve model, and what models are available?

A: In Chinese valve nomenclature, J61Y breaks down as: J = Globe Valve , 6 = Butt-Weld end connection , 1 = Straight-through pattern , Y = Stellite (cobalt-based hard alloy) sealing surface. So J61Y = straight-through butt-weld globe valve with Stellite hardfaced seal. Available models include: J61Y-200 (PN200 bar/Class 1500), J61Y-250 (PN250 bar/Class 1500–2500), J61Y-320 (PN320 bar), J61Y-P54100(V) (power station type, 540℃/100 kgf/cm², electric), J61Y-P54140(V) (power station type, 540℃/140 kgf/cm², electric), and other customizable pressure/temperature variants. The "P54" prefix indicates power-station design for 540℃ steam; "100/140" indicates pressure in kgf/cm²; "(V)" indicates electric drive. Sizes DN10–DN300. We can manufacture custom models per your specifications (pressure, temperature, material, drive mode). Provide your pipeline parameters (media, pressure, temperature, size, drive) for model recommendation and quotation.

Q2: What is the pressure and temperature rating, and how to select the body material?

A: Pressure: PN1.6–PN42MPa (Class 150–Class 2500). Temperature: -29℃~650℃ (P57/170V model ≤570℃ for continuous high-temp). Material selection guide: WCB/A105 carbon steel - general water/steam/oil, -29~425℃, most common and cost-effective. WC6/WC9 (12Cr1MoV) chrome-moly-vanadium steel - high-temperature steam to 570℃, power plant standard. F91 (9Cr-1Mo-V) - ultra-high-temperature to 650℃, advanced power plants, high strength/creep resistance. F92 - similar to F91 with improved creep, next-gen power plants. F304/F316 stainless steel - corrosive media, chemical service, -196~450℃. For superheated steam >540℃, choose WC9/F91/F92 + Stellite seal. For corrosive chemicals, choose F304/F316. For general oil/water, WCB is sufficient. Pressure-temperature rating per ASME B16.34 / GB for each material-class combination. We provide material selection guidance per your service conditions. All materials come with MTR 3.1 and heat traceability.

Q3: What is the sealing performance, and why use Stellite hardfaced seal?

A: The J61Y uses Stellite (cobalt-based hard alloy) hardfaced sealing surfaces on both the valve disc and seat ring. Stellite is deposited by welding (surfacing), then precision ground and manually run-in (lapped) to achieve a fit degree >90% - verified by blue contact test and dye penetrant inspection (PT). This results in zero leakage (bubble-tight shut-off) per API 598 / GB standards. Why Stellite: (1) High hardness (HRC 40–45) - resists wear and galling during frequent operation; (2) High-temperature resistance - maintains hardness and sealing integrity up to 650℃, unlike soft seals (PTFE/PPL) that fail above 280℃; (3) Corrosion resistance - cobalt-chromium-tungsten alloy resists chemical corrosion and oxidation; (4) Fire-safe - metal-to-metal seal survives external fire (API 607), critical for oil/gas; (5) Long service life - hardfaced seal outlasts soft seals by 3–5× in HP/HT service. The seal is not recommended for throttling (partial open) due to potential wire-drawing erosion - use for on/off shut-off only.

Q4: What drive modes are available, and can J61Y be used for throttling/regulation?

A: Drive modes: (1) Manual (handwheel) - standard, simplest, lowest cost, for DN≤50 or low-pressure where torque is manageable; (2) Bevel gear (umbrella gear) - for DN≥100 or high-pressure valves, reduces operating torque via gear reduction, for sizes where manual handwheel torque is too high; (3) Electric (multi-turn actuator) - for remote automation, on/off or 4-20mA modulating, position feedback, torque protection, manual override, DCS/PLC compatible - the "(V)" in J61Y-P54100(V) indicates electric; (4) Pneumatic (piston actuator) - for fast-acting emergency shut-off, high-cycle service, fail-safe (spring return); (5) Hydraulic - for very high torque, fast response, hydraulic-powered systems. Throttling: J61Y is primarily designed for on/off shut-off service (fully open or fully closed). It is NOT recommended for continuous throttling/flow regulation because the Stellite metal-to-metal seal can suffer wire-drawing erosion from high-velocity partial-flow, and the S-body has higher pressure drop than dedicated control valves. If you need flow regulation, consider a dedicated control valve (globe control valve with cage/parabolic plug). For occasional throttling at low pressure drop, it may be acceptable, but consult factory.

Q5: What are the installation, maintenance, and testing requirements for J61Y butt-weld globe valve?

A: Installation: (1) Weld butt-weld ends to pipe per ANSI B16.25 with qualified welder, proper pre-heat for alloy steel, post-weld NDE (RT/UT) of field welds; (2) Support valve near both ends to prevent pipe weight/weld stress on body; (3) Install with flow direction arrow pointing correctly (unidirectional - flow under the disc for optimal sealing and reduced disc chatter); (4) Protect valve internals from weld spatter (keep valve closed during welding, use heat shield); (5) Ensure adequate space above handwheel/actuator for operation and removal. Maintenance: Bolted bonnet allows in-line disassembly for seat/disc inspection/replacement (unlike welded-bonnet valves); stem packing can be replaced online (with backseat, valve fully open); lubricate stem threads and gear periodically; inspect Stellite seal for wear/galling. Testing: Factory tests - shell hydrostatic 1.5× nominal pressure (no leakage/deformation), seat hydrostatic 1.1× nominal pressure at 38℃ (zero visible leakage), functional open/close test, torque verification. Standards: GB, DIN, API, ANSI, JB/T 3595, E101, DL/T 531. After installation, perform line hydrotest and valve stroke test. Lead time: 25–45 days standard; custom 40–60 days. Warranty: 18 months from shipment. MOQ: 1 piece.

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