# ZHEJIANG DOUBLE-LIN VALVES CO.,LTD. | ISO228 one way angle valve,HPB 57-3 one way angle valve,ISO228 threaded angle stop, DIN 259 Brass Spring Check Valves,232 psi Brass Spring Check Valves,EAC 1" spring check valve, 362.5PSI Brass Ball Valves,25bar Brass Ball Valves,PN25 4 inch brass ball valve, ## summary > Manufacturer, Brands: DOUBLE-LIN, NO MOQ ! Instant Order， Immediate Delivery！DOUBLE-LIN ，Wordwide Trusted！, Established in 2000, Employees: 235~260, Annual sales: 30000000-40000000, Export ratio: 80% - 90%, Primary markets: North America, South America, Western Europe, Eastern Europe, Eastern Asia, Southeast Asia, Africa, Oceania, Worldwide. ## Company Information * [Company Profile](https://www.double-lin.com/aboutus.html): Overview, history, teams and core capabilities. * [Factory & Manufacturing](https://www.double-lin.com/factory.html): Production capacity, OEM/ODM capabilities, and R&D strength. * [Quality Control](https://www.double-lin.com/quality.html): ISO certifications, quality standards, and compliance. * [Contact Us](https://www.double-lin.com/contactus.html): Global offices, inquiries, and support channels. ## Product Category * [Brass Ball Valves](https://www.double-lin.com/supplier-421943-brass-ball-valves): Keywords: DIN259 Brass Ball Valves,PN25 Brass Ball Valves,HPB 57-3 Brass Ball Valves. * [Brass Gas Valves](https://www.double-lin.com/supplier-423232-brass-gas-valves): Keywords: 72.5 psi Brass Gas Valves,EN331 Brass Gas Valves,PTFE Brass Gas Valves. * [Brass Angle Valves](https://www.double-lin.com/supplier-423236-brass-angle-valves): Keywords: BS 2779 Brass Angle Valves,HPB 57-3 angle stop valve,ACS Brass Angle Valves. * [Brass Gate Valves](https://www.double-lin.com/supplier-423237-brass-gate-valves): Keywords: EAC Brass Gate Valves,EAC 2" stop valve,DZR 2" brass gate valve. * [Brass Spring Check Valves](https://www.double-lin.com/supplier-423238-brass-spring-check-valves): Keywords: ACS 4" spring check valve,ACS Brass Spring Check Valves,HPb 57-3 Brass Spring Check Valves. * [Brass Threaded Fittings](https://www.double-lin.com/supplier-423239-brass-threaded-fittings): Keywords: ISO228 Brass Threaded Fittings,DIN259 Brass Threaded Fittings,DIN 259 Brass Threaded Fittings. * [Brass Bibcocks](https://www.double-lin.com/supplier-423233-brass-bibcocks): Keywords: 232 psi Brass Bibcocks,232psi Brass Bibcocks,16bar Brass Bibcocks. * [Stainless Steel Braided Hose](https://www.double-lin.com/supplier-423241-stainless-steel-braided-hose): Keywords: 200CM ss corrugated hose pipe,10CM Stainless Steel Braided Hose,F3/8" Stainless Steel Braided Hose. * [Brass Manifolds](https://www.double-lin.com/supplier-423234-brass-manifolds): Keywords: HPB 57-3 Brass Manifolds,232psi Brass Manifolds,OEM temperature control panel. * [Stopcock Tap](https://www.double-lin.com/supplier-425145-stopcock-tap): Keywords: ACS Stopcock Tap,ISO228 brass hose bibcock,HPB 57-3 Stopcock Tap. * [Thermostatic Radiator Valves](https://www.double-lin.com/supplier-423235-thermostatic-radiator-valves): Keywords: ISO228 angled thermostatic valve,145psi Thermostatic Radiator Valves,DIN259 Thermostatic Radiator Valves. * [Lockshield Valves](https://www.double-lin.com/supplier-425141-lockshield-valves): Keywords: 3/4'' straight lockshield valve,ISO228 Lockshield Valves,Angled Lockshield Valves. * [Brass Swing Check Valves](https://www.double-lin.com/supplier-425142-brass-swing-check-valves): Keywords: DIN 259 Brass T Strainer,BS2779 Brass T Strainer,ISO228 brass strainer. * [Brass Compression Fittings](https://www.double-lin.com/supplier-425143-brass-compression-fittings): Keywords: HPb 57-3 Brass Compression Fittings,ISO228 Brass Compression Fittings,BS2779 Brass Compression Fittings. * [Brass Press Fittings](https://www.double-lin.com/supplier-425144-brass-press-fittings): Keywords: ISO228 Brass Press Fittings,ISO228 straight union,DIN 259 Brass Press Fittings. * [Floor Drainer](https://www.double-lin.com/supplier-423240-floor-drainer): Keywords: 50mm Floor Drainer,100mm stainless steel floor drain,Stainless Steel Floor Drainer. * [Pex Pipe Fittings](https://www.double-lin.com/supplier-430320-pex-pipe-fittings): Keywords: ISO228 Pex Pipe Fittings,M3/4" brass pex fittings,OEM Pex Pipe Fittings. * [HVAC Valve](https://www.double-lin.com/supplier-430321-hvac-valve): Keywords: HPB 57-3 HVAC Valve,PN16 pressure reducing valve,232psi HVAC Valve. * [Pipe Fitting Tools](https://www.double-lin.com/supplier-430322-pipe-fitting-tools): Keywords: OEM pipe deburring tool,Iron Pipe Fitting Tools,pipe deburring tool. * [Bronze Valves](https://www.double-lin.com/supplier-4299938-bronze-valves): Keywords: 3inch bronze gate valve flanged,bsp bronze gate valve flanged,npt 2 bronze gate valve. * [PP-R Pipes Series](https://www.double-lin.com/supplier-4299939-pp-r-pipes-series): Keywords: Brass PPR Fitting,PPR PIPE,1/2” Brass PPR Fitting. * [PEX AL PEX Pipe](https://www.double-lin.com/supplier-4765403-pex-al-pex-pipe): Keywords: PEXb-B pex al pex pipe,Water Control pex al pex pipe,Antioxidant pex al pex tubing. ## Featured Products * [EAC Brass Spring Check Valves](https://www.double-lin.com/quality-13406177-eac-brass-spring-check-valves): Keywords: DIN 259 Brass Spring Check Valves,232 psi Brass Spring Check Valves,EAC 1" spring check valve. * [1/2" x 3/4" Brass Hose Bibcock](https://www.double-lin.com/quality-13400795-1-2-x-3-4-brass-hose-bibcock): Keywords: 1/2" x 3/4" Brass Hose Bibcock,DIN259 Brass Hose Bibcock,16bar hose bib cock. * [25 Bar Brass Lever Ball Valve](https://www.double-lin.com/quality-13248913-25-bar-brass-lever-ball-valve): Keywords: 25bar brass lever ball valve,HPB 57-3 brass lever ball valve,25bar 4 brass ball valve. * [PN25 Brass Ball Valves](https://www.double-lin.com/quality-13399491-pn25-brass-ball-valves): Keywords: 362.5PSI Brass Ball Valves,25bar Brass Ball Valves,PN25 4 inch brass ball valve. * [Female X Female CE 1/2" Brass Ball Valves With Drain Cock](https://www.double-lin.com/sale-13949424-female-x-female-ce-1-2-brass-ball-valves-with-drain-cock.html): Keywords: Drain Cock 1 2 brass ball valves,CE 1 2 brass ball valves,Female X Female 1 2 brass valve. * [Female X Revolving Female Nut PN25 Brass Pex Ball Valve](https://www.double-lin.com/sale-13949427-female-x-revolving-female-nut-pn25-brass-pex-ball-valve.html): Keywords: PN25 Brass Pex Ball Valve,Revolving Female Brass Pex Ball Valve,Revolving Female 1 brass ball valve. * [1" Long Thread 25 Bar DZR Male X Female Ball Valve](https://www.double-lin.com/sale-13949689-1-long-thread-25-bar-dzr-male-x-female-ball-valve.html): Keywords: DZR Male X Female Ball Valve,25 Bar Male X Female Ball Valve,Long Thread Male X Female Ball Valve. * [Female X Female Long Thread DZR 2 Inch Brass Ball Valve](https://www.double-lin.com/sale-13949723-female-x-female-long-thread-dzr-2-inch-brass-ball-valve.html): Keywords: DZR 2 Inch Brass Ball Valve,Long Thread 2 Inch Brass Ball Valve,Long Thread brass ball valve. * [ISO228 One Way Angle Valve](https://www.double-lin.com/quality-13436824-iso228-one-way-angle-valve): Keywords: ISO228 one way angle valve,HPB 57-3 one way angle valve,ISO228 threaded angle stop. * [4" Brass Gas Ball Valve](https://www.double-lin.com/quality-13392624-4-brass-gas-ball-valve): Keywords: 72.5 psi Brass Gas Ball Valve,Hpb 57-3 Brass Gas Ball Valve,4 inch gas valve. ## Search Search endpoint: https://www.double-lin.com/buy-{keyword}.html Rules: - Convert keywords to lowercase - Replace spaces with "-" - Remove special characters Users can combine keywords for more precise searches. ## News & Blog * [Winter Will Eventually Pass, and Spring Is Sure to Come](https://www.double-lin.com/news/winter-will-eventually-pass-and-spring-is-sure-to-come-83882.html) * [ Double-Lin: Inauguration Ceremony for Plastic Pipeline Project](https://www.double-lin.com/news/double-lin-inauguration-ceremony-for-plastic-pipeline-project-279390.html) * [Double-Lin Warms Winter for Special Children with Love & Hope](https://www.double-lin.com/news/double-lin-warms-winter-for-special-children-with-love-279319.html) * [Double-Lin: Warming Communities with Corporate Responsibility – 2026 Spring Festival Charity Initiative](https://www.double-lin.com/news/double-lin-warming-communities-with-corporate-responsibility-2026-spring-festival-charity-initiative-302592.html) * [Valve Opens to Brilliance, She Shines Globally——Double-Lin Pays Tribute to Every Extraordinary Woman](https://www.double-lin.com/news/valve-opens-to-brilliance-she-shines-globally-double-lin-pays-tribute-to-every-extraordinary-woman-302331.html)