CNLD Industrial Pipeline Valves (Zhejiang Led Valve): Gate, Ball, Globe, Check & Butterfly Valves

Supply industrial pipeline valves and flow control packages from Zhejiang Led Valve Co., LTD (CNLD, Wenzhou, China) in sizes 1/2" to 60" (Class 150–2500): API 600 gate valves, API 6D ball valves, globe and check valves, triple offset butterfly valves, and strainers.

CNLD API 600, DIN, and GOST Foundry & Forged Wedge and Slab Gate Valves

CNLD foundry-poured and forged wedge gate valves provide reliable bi-directional isolation for oil, gas, high-pressure steam, and chemical pipelines.

The product range includes outside screw and yoke (OS&Y) designs with Stellite-hardfaced flexible wedges, bolted bonnet (BB) and high-pressure pressure seal bonnet (PSB 1500LB–2500LB) configurations, GOST 20GL DN500 PN16 gate valves, and cryogenic LCB extended-bonnet models.

Nominal sizes from 1/2" to 60" (DN15–DN1500), pressure ratings from ASME Class 150 to Class 2500
Body metallurgy: WCB carbon steel, C12 (12% Cr), WC6, WC9, F91 alloy steels, and CF8M stainless steel
Special trims and materials: C95800 aluminum bronze trim for seawater and LCB/LCC low-temperature steels
End connections: RF/RTJ flanged ends per ASME B16.5 / B16.47 or butt-welded (BW) ends per ASME B16.25

CNLD API 6D Trunnion-Mounted, Floating, DBB, and Cryogenic Ball Valves

CNLD industrial ball valves are manufactured in 2-piece and 3-piece split-body trunnion-mounted designs for oil and gas transmission pipelines, alongside floating ball configurations for process skids.

The portfolio includes Double Block and Bleed (DBB) valves, LF2 fully welded buried pipeline valves, top-entry serviceable valves, T-port 3-way valves in Duplex and Alloy 20, and -196 °C ultra-low temperature LNG ball valves.

Full-bore and reduced-bore sizes from 1/2" to 60", rated from Class 150 to Class 2500 per API 6D and BS 5351
Body constructions: 2-piece and 3-piece forged or foundry-poured split body, fully welded body, and top-entry architecture
Seating options: resilient soft seats (PTFE, RPTFE, PEEK) and hardfaced metal-to-metal seats for CO2 and abrasive media
Certified fire-safe design per API 607, anti-static device, blowout-proof stem, and 100% testing per API 598

CNLD BS 1873, DIN, and GOST WCB Steel, Bellow Seal, and Pressure Seal Globe Valves

CNLD globe valves provide dependable shut-off and accurate flow throttling for steam, thermal oil, gases, and corrosive chemical media thanks to their short stem stroke and guided disc geometry.

The lineup features bolted bonnet straight globe valves, high-temperature pressure seal globe valves, low-resistance Y-pattern valves, angle globe valves, zero-leakage bellow seal valves, and GOST PN100 20GL globe valves.

Engineering standards: BS 1873, ASME B16.34, DIN EN, and Russian GOST specifications (including PN100 20GL)
Flow body patterns: straight-through T-pattern, oblique low-pressure-drop Y-pattern, and 90° angle pattern
Multi-ply stainless steel bellow seal options eliminating fugitive stem emissions on hazardous media lines
Cryogenic LCB extended-bonnet globe valves and combination stop-check (globe check) valve configurations

CNLD BS 1868 & API 594 Swing, Lift, Tilting Disc, and Counterweight Check Valves

CNLD check valves automatically prevent reverse flow and protect pumps, compressors, and high-pressure pipelines against backflow damage.

The range comprises swing check valves (including 900LB CF8M stainless steel and DIN 3352 DN400 PN63 models), lift check valves, non-slam tilting disc check valves, hydraulic counterweight swing check valves, pressure seal check valves, and cryogenic check valves.

Designed to BS 1868, API 594, API 6D, and DIN 3352 (EN 558-1 face-to-face) with testing per API 598
Bonnet designs: bolted cover and high-temperature pressure seal cover for thermal power plant steam lines
Tilting disc and lever-and-counterweight swing mechanisms preventing water hammer on pump trip
Cryogenic extended-bonnet check valves engineered for LNG, liquid nitrogen, and liquid oxygen service

CNLD API 609 Triple Offset Metal-Seated and High-Performance Butterfly Valves

CNLD butterfly valves manufactured to API 609 and ASME B16.34 deliver compact, low-torque shut-off and throttling for large-diameter industrial pipelines.

The core portfolio features triple offset butterfly valves with multi-layer laminated sealing or metal-to-metal renewable seats, double-offset high-performance butterfly valves, and concentric elastomer-lined models.

Triple eccentric geometry with multi-layer stainless/graphite sealing or metal-to-metal renewable seat rings
Body styles: wafer, lugged, double-flanged (ASME B16.5 / B16.47), and butt-welded ends per ASME B16.10 / API 609
Large-bore pipeline solutions including DN800 WCB gear-operated butt-weld valves and sizes up to 60"
Specialized metallurgy: CF8M stainless steel (e.g., 20" 150LB Lug with chainwheel), forged steel, and low-temp LC1

CNLD ASME B16.34 & DIN Y-Type, T-Type, and Basket Pipeline Strainers

CNLD industrial strainers are installed upstream of pumps, pressure reducing valves, flowmeters, and control valves to capture solid particulates and prevent mechanical wear or clogging.

The product line includes Y-type strainers, T-type strainers, and large-capacity basket strainers manufactured in carbon steel and stainless steel according to ASME B16.34 and DIN EN 12516 standards.

Flanged Y-strainers (such as 16" ANSI Class 300 RF in ASTM A216 WCB) fitted with 316SS stainless steel mesh screens
Heavy-duty T-type flanged strainers (including 12" ASME Class 600 RF carbon steel and stainless steel units)
Basket type strainers featuring removable debris chambers and blow-off drain ports for rapid maintenance
Dimensional compliance with ASME B16.34 / B16.10 / B16.5 and DIN EN 12516 / EN 558-1 / EN 1092-1 / EN 12627

CNLD API 602 High-Pressure Forged Steel Gate, Globe, and Check Valves

CNLD API 602 forged steel valves are precision-forged from solid steel billets, offering dense grain structure, superior mechanical strength, and extended service life under high pressure, high temperature, and corrosive media.

The series encompasses compact forged steel gate valves, straight-through and Y-pattern forged globe valves, and forged lift and swing check valves.

Compact drop-forged body construction engineered for severe high-pressure steam, petrochemical, and thermal lines
API 602 forged globe valves available in straight-through T-pattern and direct-flow Y-type configurations
Forged wedge gate valves alongside piston/ball lift check valves and integral-pin forged swing check valves
End connections: threaded (NPT/BSPT), socket weld (SW), butt weld (BW), and flanged ends up to Class 2500

CNLD MSS SP-81 Knife Gate Valves and API 599 / API 6D Plug Valves

For high-viscosity fluids, abrasive slurries, pulp, and severe chemical duties, CNLD manufactures heavy-duty knife gate valves and quarter-turn plug valves. Knife gate valves (2" to 36", up to ANSI Class 300 per MSS SP-81) feature a beveled blade that shears through fiber, mud, and slurry.

CNLD plug valves (API 599 / API 6D) are supplied in PTFE-sleeved soft-seat designs and inverted pressure-balance lubricated metal-seated configurations.

Knife gate valves from 2" to 36" (up to ANSI Class 300, MSS SP-81, ASME B16.5) in stainless steel, carbon steel, and ductile iron
Metal-seated unidirectional and bi-directional stainless steel knife gate valves for mining, pulp & paper, and ash handling
PTFE-sleeve soft-seat plug valves offering low-torque 90° operation, self-cleaning action, and corrosion resistance
API 599 / API 6D inverted pressure-balance lubricated plug valves with zero-leakage metal seating and cavity-free body

CNLD Valve Identification, Nameplate Verification, and Engineering Selection

Zhejiang Led Valve Co., LTD (operating globally as CNLD Valves, headquartered in Oubei Street, Yongjia County, Wenzhou, Zhejiang Province, China) brings over 20 years of manufacturing and export experience in industrial flow control, integrating in-house R&D, steel foundries, CNC machining,

assembly, and pressure testing.

To select a complete valve package or order replacement components, specify the valve family (gate, ball, globe, check, butterfly, strainer, forged steel, knife gate, or plug valve), nominal bore (1/2" to 60" / DN15 to DN1500), pressure rating (Class 150 to Class 2500 / PN10 to PN420), and body/trim

metallurgy.

Submitting a photograph of the CNLD valve nameplate, general arrangement drawing, or project datasheet enables rapid verification and accurate factory quotation.

API 600, DIN, and GOST Wedge Gate Valves & Pressure Seal Bonnets

CNLD foundry-poured and forged steel gate valves feature an outside screw and yoke (OS&Y) rising stem design with a flexible or solid wedge hardfaced with Stellite alloy, compensating for thermal seat distortion and ensuring tight shut-off.

For high-pressure thermal power and steam isolation (Class 900, 1500, and 2500), CNLD manufactures pressure seal bonnet gate valves in C12 (12% Cr), WC6, WC9, and F91 chrome-moly steels, alongside Russian GOST 20GL wedge gate valves (such as DN500 PN16).

We supply complete manual and actuated gate valves, replacement stems, Stellite-faced wedges, yoke sleeves, spiral-wound bonnet gaskets, and die-formed graphite stem packing.

API 6D Trunnion-Mounted, Fully Welded, and Cryogenic Ball Valves

CNLD API 6D trunnion-mounted ball valves in 2-piece and 3-piece split-body constructions (WCB/LCC/CF8M or forged A105/LF2/F316) utilize spring-energized seats providing Double Block and Bleed (DBB) isolation and automatic body cavity pressure relief.

For buried gas transmission pipelines, CNLD produces LF2 fully welded ball valves; for process lines requiring inline maintenance or flow diversion, top-entry ball valves and 3-way T-port/L-port ball valves in Duplex steel and Alloy 20 are available.

We deliver complete API 6D ball valves, tungsten-carbide coated balls, PTFE/PEEK/Devlon soft seat rings, metal-to-metal seat kits, anti-static springs, and blowout-proof stems.

BS 1873, DIN, and GOST Globe Valves & Zero-Leakage Bellow Seal Valves

CNLD globe valves are engineered for reliable throttling and frequent cycling across steam, thermal oil, gas, and corrosive chemical pipelines, utilizing a shorter stem stroke than gate valves to minimize packing wear.

Bellow seal globe valves incorporate a multi-ply stainless steel bellows welded to the stem, providing a hermetic secondary barrier that eliminates fugitive emissions on toxic, flammable, or lethal media lines.

We supply straight T-pattern, oblique Y-pattern, and 90° angle globe valves per BS 1873, DIN, and GOST (PN100 20GL), along with replacement plug discs, bellows stem assemblies, and bonnet gaskets.

BS 1868 & API 594 Swing, Lift, Tilting Disc, and Counterweight Check Valves

CNLD non-return check valves safeguard centrifugal pumps, compressors, and process headers against reverse flow and destructive water hammer surges.

The manufacturing range spans full-bore swing check valves (including 900LB CF8M stainless steel and DIN 3352 DN400 PN63 units), piston/ball lift check valves, fast-closing tilting disc check valves, and lever-and-counterweight hydraulic cushioned swing check valves.

We supply complete check valve assemblies, disc and hinge arm sets, internal hinge pins, hydraulic dashpots, torsion springs, and high-pressure pressure seal covers.

API 609 Triple Offset Metal-Seated and High-Performance Butterfly Valves

CNLD API 609 triple offset butterfly valves provide bi-directional, zero-leakage isolation in large-diameter pipelines where elastomer seats fail due to elevated temperatures or pressures.

The triple eccentric right-angle cone geometry eliminates friction between the laminated disc seal (stainless steel + flexible graphite) and the body seat throughout the 90° stroke.

Designs include multi-layer sealing and metal-to-metal renewable seat rings in wafer, lug, double-flanged, and butt-welded (e.g., DN800 WCB) bodies.

We supply complete butterfly valves up to 60" (DN1500), replacement laminated seal rings, renewable metal seats, shafts, bushings, and worm/bevel gearboxes.

ASME B16.34 & DIN EN 12516 Y-Type, T-Type, and Basket Pipeline Strainers

Installed upstream of pumps, control valves, and flowmeters, CNLD pipeline strainers trap rust, weld slag, and solid debris to prevent downstream erosion and blockage.

The portfolio covers carbon steel and stainless steel Y-strainers (such as 16" Class 300 WCB with 316SS 80-mesh screens), flanged T-type strainers (12" Class 600 WCB), and high-capacity basket strainers built to ASME B16.34 and DIN EN 12516.

We supply complete strainers, replacement perforated and wire-mesh screens in 304/316 stainless steel (8 to 400 mesh), cover gaskets, and blow-off drain plugs.

API 602 Forged Steel Valves, MSS SP-81 Knife Gate & API 599 Plug Valves

For high-pressure small-bore lines (Class 800 to 2500), CNLD produces drop-forged API 602 gate, straight/Y-pattern globe, and lift/swing check valves with NPT threaded, socket-weld (SW), or butt-weld (BW) ends.

For mining slurries, pulp, and wastewater, CNLD supplies MSS SP-81 unidirectional and bi-directional metal-seated knife gate valves (2" to 36"); for corrosive chemicals and viscous media, PTFE-sleeved soft-seat plug valves and API 599 inverted pressure-balance lubricated plug valves are available.

We deliver complete forged, knife gate, and plug valves alongside replacement knife blades, PTFE body sleeves, and sealant fittings.

Cryogenic Service Down to -196 °C and Specialty Corrosion-Resistant Alloys

CNLD engineers cryogenic gate, globe, check, and trunnion/floating ball valves with extended bonnets in LCB, LCC, LF2, and CF8/CF8M steels for LNG terminals, liquid nitrogen, and air separation plants operating down to -196 °C.

The extended vapor column keeps the stem packing above the frost line, ensuring smooth actuation and tight stem sealing under deep cryogenic conditions.

With its own steel foundry, CNLD pours carbon steels, chrome-moly alloys, austenitic stainless steels, Duplex/Super Duplex (2205/2507), Alloy 20, and C95800 aluminum bronze.

ISO 5211 Valve Automation: Electric, Pneumatic Actuators, and Gearboxes

CNLD valves are equipped with standardized ISO 5211 top mounting pads for direct installation of manual bevel/worm gearboxes, pneumatic actuators, and electric multi-turn or quarter-turn actuators.

Automated valve packages are factory-assembled and tested with explosion-proof electric actuators, double-acting or spring-return pneumatic cylinders, 4–20 mA smart positioners, NAMUR solenoid valves, and limit switch boxes.

We supply turnkey actuated valve assemblies as well as standalone actuators, gear operators, mounting brackets, and control accessories.

Direct Factory Export, Quality Certifications, and Global Logistics

CNLD holds API 6D, API 600, API 602, API 607, API 594, API-Q1, CE/PED, SIL, TS, ISO 9001, ISO 14001, and ISO 45001 certifications, supplying international operators including Petronas and PARCO.

SpareX coordinates direct procurement from Zhejiang Led Valve Co., LTD in Wenzhou, overseeing dimensional checks, API 598 hydrostatic/pneumatic test verification, seaworthy crating, and international door-to-door freight.

Send your valve schedule, piping specification, or nameplate photo to receive an engineering review and formal commercial quotation.

Valve configurations, foundry and machining lead times, and export pricing for CNLD products are calculated individually upon technical inquiry; public retail price lists are not published by the manufacturer.

We operate as an independent international supplier and are not an exclusive agent of Zhejiang Led Valve Co., LTD.