Stainless Steel Bevel Gear Globe Valve | Bevel Gear Operation | DN50–1000 | CL150–2500 | -60~550℃

Stainless Steel Bevel Gear Globe Valve - high-performance flow control, combining stainless corrosion resistance (SS304/316/CF8/CF8M/CF3/CF3M, pickled/passivated) with efficient bevel gear transmission. Engineered to regulate, throttle, or shut off flow, in harsh HP/HT/corrosive environments. Integrated bevel gear reduces manual force for large sizes/high pressure, stable open/close. Tapered disc/seat machined, tight seal, replaceable seat. Precision cast body + shot blasting. Bolted bonnet + backseat + OS&Y, low maintenance. DN50–1000 (NPS 2"–40"), CL150–2500, -60~550℃. Seat SS/alloy/PTFE, disc CF3/CF8/CF8M, stem 2Cr13/SS304/316. Flange/butt-weld/thread. Bevel gear manual, electric opt. Media: water/steam/oil/nitric/acetic/urea. ANSI B16.34/API 598/GB/T 12235. Trusted petrochemical/water/power/food/pharma/offshore/metallurgy. OEM/ODM, long-term stability.

1. Superior Corrosion Resistance - SS304/316/CF8/CF8M/CF3/CF3M, Pickled/Passivated, Acids/Alkalis/Salts, Chemical/Offshore: Made of high-quality stainless steel (SS304/316 and other grades including CF3, CF3M, CF8, CF8M), the valve body undergoes pickling and passivation treatment (per ASTM A967), ensuring uniform and bright surface, and strong resistance to corrosive media such as acids, alkalis, and salts. SS304/CF8 for general corrosive service (nitric acid, oxidizing environments); SS316/CF8M with molybdenum for improved pitting/crevice corrosion resistance in chloride environments (seawater, chemicals, acetic acid, urea); CF3/CF3M (low-carbon 304L/316L) for improved weldability and intergranular corrosion resistance. It is suitable for harsh working environments in chemical and offshore industries - where salt spray, corrosive chemicals, and marine atmospheres attack carbon steel valves. The stainless construction is also rust-free and easy to clean - suitable for pharmaceutical, food & beverage, and sanitary applications. All stainless materials undergo strict quality inspection - chemical composition (spectrographic), mechanical properties (tensile, hardness), intergranular corrosion test (optional per ASTM A262) - ensuring corrosion resistance, wear resistance, and mechanical strength. All materials supplied with MTR (Material Test Report) and heat-number traceability.

2. Efficient Bevel Gear Operation - Integrated Bevel Gear Transmission, Reduces Manual Force, Large Size/HP, Stable Smooth Open/Close: Equipped with an integrated bevel gear transmission mechanism (umbrella gear / bevel gear operator mounted on the valve yoke), the valve can be operated easily even under high pressure or large diameter conditions - reducing manual operation force significantly via gear reduction (typical gear ratio 3:1 to 10:1 depending on size), improving operational efficiency, and ensuring stable and smooth opening and closing movements. Without bevel gear, large globe valves (NPS≥8" or high pressure CL≥600) require excessive handwheel torque that is impractical or impossible for a single operator. The bevel gear operator features: (a) sturdy cast iron or ductile iron gear housing with hardened steel bevel gears for long life; (b) grease-lubricated gears for smooth operation; (c) position indicator on gear housing showing open/closed; (d) declutch mechanism optional for motorized conversion; (e) lockable handwheel for security. The gear operator is standard for NPS≥8" or CL≥600, optional for smaller sizes. For automated systems, an electric actuator can be mounted in place of the bevel gear handwheel (ISO 5211 mounting) - providing remote on/off or 4-20mA modulating control. The bevel gear design ensures that even the largest valves (up to DN1000/NPS40") can be operated safely by one person.

3. Precise Sealing Performance - Tapered Disc/Seat, CNC Precision Machined, Tight Seal Minimal Leak, Replaceable Seat Multi-Material: The valve disc and seat adopt a tapered sealing structure, with precision machining by CNC lathes, ensuring tight sealing, minimizing leakage, and achieving reliable shut-off performance. The tapered (conical) seat design provides a self-aligning, self-lapping seal that improves with use - the disc and seat wear in together, maintaining tightness over many cycles. The removable and replaceable valve seat can be matched with the disc's sealing surface in various material combinations to extend service life: (a) Stainless steel seat (CF8/CF8M) - general corrosive service; (b) Alloy steel seat (13Cr/410, Stellite) - high-temperature/abrasive service; (c) PTFE seat - chemical/corrosive, bubble-tight soft seal, ≤200℃. The replaceable seat allows seat replacement without changing the valve body - reducing maintenance cost and downtime. The disc material (CF3, CF3M, CF8, CF8M) matches the body material for corrosion compatibility. The tapered seal geometry also enables precise throttling - flow is proportional to disc lift, allowing flow regulation (unlike gate valves which are only for on/off). This combination of precise machining, tapered geometry, and material flexibility ensures reliable sealing and long service life even under high pressure and temperature conditions.

4. Durable & Low Maintenance - Heavy-Duty Precision Cast + Double Shot Blasting, No Sand Holes, Backseat/Inverted Seal, OS&Y, Low Wear: The heavy-duty valve body is formed by precision casting and double shot blasting treatment, with no sand holes and a smooth appearance. Precision casting (investment casting or sand casting with strict quality control) ensures dimensional accuracy and structural integrity; double shot blasting (first coarse, then fine steel shot) removes casting sand, scale, and surface defects, producing a smooth, clean surface ready for pickling/passivation. The bonnet and stem are treated with inverted sealing (backseat/back seal) - when the valve is fully open, the stem backseat engages with the bonnet, isolating the packing from process pressure and allowing online packing replacement without shutdown, avoiding leakage. The OS&Y (outside screw and yoke) design ensures stem threads are outside the body, never contacting process medium - protected from corrosion and galling, with visual position indication. The high-quality materials reduce wear - stainless stem (2Cr13/SS304/SS316) with surface hardening, tapered seat with replaceable design - lowering maintenance costs and extending the valve's service life. The closing mechanism operates by moving the valve flap against the fluid direction (flow under the disc), minimizing wear on internal components. The simple structure with fewer parts makes disassembly, maintenance, and seal replacement easy.

5. Versatile & Customizable - Wide Sizes/Pressures/Materials, OEM/ODM, Custom Logos/Packaging, DN50–1000, CL150–2500: Available in a wide range of sizes, pressure levels, and material grades, it can be customized according to specific industrial needs. Sizes: DN50–DN1000 (NPS 2"–40"), customizable beyond this range. Pressures: PN16/150LB ~ PN40/300LB standard, CL150~CL2500 optional. Materials: SS304, SS316, CF3, CF3M, CF8, CF8M - customizable per medium. It supports OEM/ODM services, including custom sizes, materials, logos (company name/logo cast or etched on body/handwheel), and packaging (export cartons, wooden crates, pallets per requirement) - to meet the personalized requirements of different customers. Connection types customizable: flange (ANSI B16.5 RF/FF), butt weld, thread - per piping specification. Operation modes customizable: bevel gear manual (standard for large sizes), handwheel manual (for small sizes), electric actuator (for automation). Seat/disc/stem materials customizable per medium: PTFE for chemicals, alloy/Stellite for high-temp/abrasive, 2Cr13/SS316 for stem. This wide configurability ensures compatibility with any global industrial piping design - from general water service to corrosive chemical, high-pressure steam, and offshore marine. We work closely with customers to develop custom solutions for special applications.

6. Global Standards Compliance - ANSI/API/ASME/GB, Strict Shell/Seal Pressure Test, API 598, ANSI B16.34/B16.10, GB/T 12235/JB/T 9002: Designed and manufactured in accordance with ANSI, API, ASME, GB, and other international standards, each valve undergoes strict shell and seal pressure testing before leaving the factory, ensuring product quality and compatibility with global industrial piping systems. Specific standards: ANSI B16.34 (valves pressure-temperature rating, wall thickness, design), ASME B16.10 (face-to-face/structural length, ensures interchangeability), ANSI B16.5 (flange dimensions), API 598 (valve inspection and testing - shell test 1.5× rated, seat test 1.1× rated, zero leakage), GB/T 12235 (steel globe valves, Chinese standard), JB/T 9002 (bevel gear operated valves). This ensures consistent dimensions, pressure ratings, and material quality - simplifying global sourcing and system integration for international projects. Every valve: 100% shell hydrostatic test (1.5× rated pressure, no leakage/deformation), 100% seat hydrostatic test (1.1× rated, zero visible leakage), functional open/close test (bevel gear operation smooth, no binding), dimensional inspection (flange, face-to-face, bore), material verification (MTR, heat number). Each valve permanently marked with material, size, pressure, design standard, serial number, heat number, flow direction arrow. Documentation includes MTR, hydrotest report, operating/maintenance manual, certificate of conformity. As an ISO 9001 certified manufacturer, strict quality control is maintained throughout production.

Stainless Bevel Gear Globe Valve: stainless S-body (SS304/316/CF8/CF8M) + flange/butt-weld/thread ends, bolted bonnet, OS&Y rising stem, disc, tapered seat (SS/alloy/PTFE), bevel gear handwheel (electric opt). Turning bevel gear drives gear train (torque), rotates stem - rises/lowers, disc moves linearly. Opening: disc lifts, flow area increases. Closing: disc seats tapered ring - metal/PTFE seal, zero leak. Bevel gear reduction operation large sizes/HP. Tapered disc/seat enables throttling (flow proportional travel). OS&Y threads outside body, protected. Bolted bonnet in-line maintenance. On/off throttling. DN50–1000, CL150–2500, -60~550℃. ANSI B16.34/API 598.

Petrochemical & Offshore Oil & Gas - Oil/Gas/Chemical Raw Material Pipelines, Offshore Drilling Platforms, Marine Systems, Corrosive/Harsh: Used in pipeline systems for oil, gas, and chemical raw materials in refineries, petrochemical plants, and processing facilities - including flow regulation and shut-off in process lines. Also used in offshore oil & gas - offshore drilling platforms and marine pipeline systems - where the stainless steel body (SS316/CF8M) resists salt spray and marine corrosion, and the bevel gear operation allows easy manual operation on remote platforms without power. The corrosion resistance handles H2S/CO2 and corrosive hydrocarbons; the tapered seat enables flow control; the bolted bonnet allows in-line maintenance. CL150–2500 pressure range covers gathering lines to high-pressure process. Flange or butt-weld connection per offshore piping codes (ASME B31.3, B31.4, B31.8).

Water Treatment & Food/Pharma - Urban Water Supply/Drainage, Industrial Wastewater, Pure Water, Sanitary Food/Pharma Pipelines: Used in urban water supply and drainage (municipal water treatment, distribution networks), industrial wastewater treatment (wastewater, sludge, chemical wastewater), and pure water systems (reverse osmosis, deionized water) - resisting corrosion from chemicals and impurities. For food & pharmaceutical industry: sanitary pipelines for food processing and pharmaceutical production - the stainless construction (SS316/CF8M) is rust-free, non-contaminating, and easy to clean (CIP/SIP); the smooth pickled/passivated surface meets sanitary requirements; the precise throttling allows flow control in batch processing. The bevel gear operation is suitable for large water main isolation valves. PTFE seat available for chemical/water service. Wide size range DN50–1000 covers small process lines to large water mains.

Power Generation - Thermal/Nuclear/Hydropower Plants, Steam and Water Pipelines, HP/HT Service: Used in thermal power plants, nuclear power plants, and hydropower plants - in steam and water pipelines (boiler feedwater, main steam, auxiliary steam, cooling water, condenser cooling), where high temperature and pressure resistance are critical. The stainless body handles high-temperature steam and water; the bevel gear operation allows easy operation of large boiler feedwater and steam isolation valves; the tapered seat with alloy/Stellite option resists high-temperature steam erosion; the OS&Y stem provides visual position indication for power plant operators. The bolted bonnet allows in-line maintenance in power plants. For high-temperature service >425℃, alloy seat/stem available. Flange connection standard for power plant piping (ASME B31.1). Bevel gear is standard for large steam valves (NPS≥8") where manual handwheel torque is excessive.

Metallurgy & Mining - Smelting and Mineral Processing Pipelines, Abrasive/High-Temp Media: Used in pipeline systems for smelting and mineral processing - steel plants, non-ferrous smelters, mining beneficiation (flotation, leaching, tailings, water circuits) - withstanding harsh working conditions such as abrasive media, high solids content, high-temperature flue gas, and corrosive chemicals. The stainless body (CF8/CF8M) resists corrosion from mining/pulp chemicals (acids, bases, leaching agents); the alloy/Stellite seat option resists erosion from abrasive particle-laden fluids; the robust cast body withstands mechanical vibration and thermal cycling in industrial plants; the bevel gear operation allows easy operation in dusty, remote mining/paper mill environments. The bolted bonnet allows in-line seat/disc replacement for abrasive service.

General Industrial & Custom - Chemical Processing, HVAC, OEM/ODM Custom Applications, Wide Media: Used in general chemical processing (acids, alkalis, solvents, reagents), HVAC (heating/cooling water, steam), and OEM/ODM custom applications - where the wide range of sizes, pressures, materials, and connection types allows customization per specific industrial needs. The valve supports OEM/ODM services including custom sizes, materials, logos, and packaging. Media compatibility: water, steam, oil, nitric acid, acetic acid, weak corrosive media, urea, and more - material and seat selected per medium. The bevel gear manual operation is standard, with electric actuator optional for automation. Connection: flange (ANSI B16.5), butt weld, thread - per piping specification. This versatility makes the valve suitable for diverse industrial projects worldwide.

Every Stainless Bevel Gear Globe Valve: Casting - cast SS304/316/CF8/CF8M body, blasting, UT. Material - stainless, MTR 3.1, heat traceable. Trim - CF3/CF8/CF8M disc, 2Cr13/SS304/316 stem, SS/alloy/PTFE seat. Bevel gear - transmission, ratio, smooth, torque. Machining - flange B16.5, verified. Assembly - OS&Y stem, bolted bonnet, backseat, packing, stroke. Pressure - 100% shell 1.5×PN, seat 1.1×PN, zero leak API 598. Functional - bevel gear cycle, smooth. Surface - SS pickled/passivated. Marking - permanent material/size/pressure/serial. Standards ANSI B16.34/API 598/B16.10/GB/T 12235/JB/T 9002. Docs - MTR, cert. Lead: 25–45 days. Warranty: 18 months.

Q1: Why use bevel gear operation instead of manual handwheel, and what sizes need it?

A: A bevel gear operator (umbrella gear) uses a set of bevel gears to reduce the torque required to open/close the valve - typical gear reduction 3:1 to 10:1 depending on valve size and pressure. This is necessary because globe valves require significant torque to seat the disc tightly, especially for large sizes and high pressures - without gear reduction, a NPS 12" CL600 globe valve might require 500+ N·m of handwheel torque, impossible for one person. When is bevel gear needed? Generally standard for: (1) NPS≥8" (DN≥200) regardless of pressure - large disc area creates high seating force; (2) CL≥600 (PN≥100) for any size - high pressure increases seating torque; (3) any valve where calculated handwheel torque exceeds ~200 N·m (comfortable single-person limit). For smaller sizes (NPS≤6", CL≤300), a direct handwheel is sufficient and more economical. The bevel gear operator features: sturdy gear housing, hardened steel gears, grease lubrication, position indicator (open/closed), lockable handwheel. It can be field-upgraded to electric by replacing the handwheel with an actuator (ISO 5211 mounting). The gear operator is low-maintenance - periodic grease replenishment is the only routine task. We specify bevel gear per your valve size/pressure to ensure safe, easy operation.

Q2: What stainless steel materials are available, and how do I select for corrosive media?

A: Available body materials: (1) SS304 / CF8 (18Cr-8Ni) - general corrosive service, nitric acid, oxidizing environments, -196~425℃, most common cost-effective stainless; (2) SS316 / CF8M (16Cr-10Ni-2Mo) - with molybdenum for improved pitting/crevice corrosion resistance in chloride environments (seawater, brine, chemicals), acetic acid, urea, pharmaceutical, -196~450℃; (3) CF3 / CF3M (low-carbon 304L/316L) - improved weldability and intergranular corrosion resistance (after welding), for critical corrosive service; (4) SS304/SS316 forged (for small/high-pressure sizes, denser, no casting defects). Selection guide: general water/steam/weak acid → SS304/CF8; chloride/seawater/acetic acid/urea/pharma → SS316/CF8M; welded critical corrosive → CF3/CF3M; strong oxidizing agents (nitric acid) → SS304/CF8 (good oxidizing acid resistance); specific chemicals/concentrations/temperatures → consult factory or corrosion charts. Trim: disc CF3/CF3M/CF8/CF8M (matches body); stem 2Cr13 (hardenable, wear-resistant) or SS304/SS316 (corrosion-resistant); seat stainless (general), alloy steel/13Cr (high-temp/wear), PTFE (chemical, ≤200℃, bubble-tight). All materials come with MTR 3.1 and heat traceability. Intergranular corrosion test (ASTM A262) available on request.

Q3: What connection types are available (flange/butt-weld/thread), and which should I choose?

A: Three connection options: (1) Flange (ANSI B16.5) - RF (raised face) standard, FF (flat face) optional. Most common, allows easy installation and removal for maintenance, compatible with standard flanges/gaskets worldwide. Use for general process, water, chemical, power - where valve may need removal. Gasket: spiral-wound graphite/stainless (high-temp), PTFE (chemical), rubber (water). (2) Butt weld (ANSI B16.25) - valve ends welded directly to pipe, permanent leak-free joint, no flange gasket, higher pressure/temperature capability, more compact. Use for high-pressure (CL≥900), high-temperature steam, hazardous media, buried/inaccessible piping - where leakage is unacceptable and removal is rare. Requires qualified welder and post-weld NDE (RT/UT). (3) Thread (NPT/BSPT) - for small sizes (NPS≤2"), instrument air, hydraulic, small-bore process. Easy installation but not for high pressure/temperature or cyclic service (thread can leak/gall). Selection guide: general industrial/maintenance access → flange; high pressure/high temp/hazardous/leak-free → butt-weld; small-bore/instrument → thread. Note: this valve series is primarily flanged (per product image and standard offering), with butt-weld and thread as customizable options. Provide your piping code (ASME B31.1/B31.3, etc.) and media for connection recommendation. Face-to-face per ASME B16.10 ensures interchangeability for flanged valves.

Q4: What is the pressure and temperature range, and can this valve be used for throttling?

A: Range: Size DN50–DN1000 (NPS 2"–40", customizable). Pressure: PN16/150LB ~ PN40/300LB standard, CL150~CL2500 optional. Temperature: -60℃~+550℃ (depends on material grade and seal - PTFE seat ≤200℃, metal seat to 550℃, stainless body to 425℃ continuous, alloy trim for higher). Throttling: Yes - the stainless steel bevel gear globe valve is suitable for both on/off shut-off AND precise throttling/flow regulation. The tapered (conical) disc/seat geometry is inherently designed for regulation: disc stroke is proportional to flow opening, flow characteristics approximately linear or equal-percentage, stable flow with minimal turbulence. This is a key advantage over gate valves (which should only be fully open/closed, not throttled). However: (1) Continuous severe throttling at high pressure drop can cause wire-drawing erosion - choose alloy/Stellite seat for such service, or a dedicated control valve; (2) Globe valves have higher pressure drop than gate/ball valves due to S-turn flow path - account for in system hydraulics; (3) Bevel gear manual throttling requires operator care to hold partial position - for automated precise regulation, choose electric actuator with 4-20mA. For typical isolation, bypass, occasional flow adjustment, the valve is excellent and versatile.

Q5: What are the installation, maintenance, and testing requirements?

A: Installation: (1) Flanged: install between ANSI B16.5 flanges with appropriate gasket and bolts, tighten bolts cross-pattern to specified torque; Butt-weld: weld per ANSI B16.25 with qualified welder, pre-heat for alloy, post-weld NDE; Thread: apply thread sealant, tighten to torque. (2) Support valve near both ends to prevent pipe weight stress; (3) Install with flow direction arrow (unidirectional - flow under the disc for optimal sealing); (4) Ensure adequate space above bevel gear handwheel for operation and bonnet removal; (5) For stainless valves, avoid carbon steel contamination (use stainless tools/gaskets), pickling/passivation after installation if surface damaged. Maintenance: Bolted bonnet allows in-line disassembly for seat/disc inspection/replacement; backseat allows online packing replacement (valve fully open); lubricate bevel gears periodically (grease fitting); inspect packing/seal for leakage; for stainless, clean/passivate if rust appears; replace seat if worn/eroded. Testing: Factory - 100% shell hydrostatic 1.5× rated, seat 1.1× rated, zero leak API 598; functional bevel gear open/close test; dimensional inspection. After installation, line hydrotest and valve stroke test. Operation: Bevel gear manual (standard for large sizes), electric actuator optional (on/off or 4-20mA modulating). Commercial: Lead time 25–45 days standard, custom 40–60 days; MOQ 1 pc; T/T 30% deposit + 70% before shipment, L/C at sight for large orders; warranty 18 months from shipment. OEM/ODM available (custom size/material/logo/packaging).

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