This blind flange valve is designed with full pore to allow full flow, and dual plates for isolation. There is a drainage design at the bottom of the valve body for bleeding out the fluid. Design Feature 鈥ull Bore allows full flow 鈥ast body 鈥i-directional 鈥NVGL Type Approval certificated 鈥olid structure design, and very long service life 鈥asy to operate and reliable 鈥cid and alkali corrosion resistance 鈥ero Leakage, 100% leakage test before release 鈥ull isolation between different fluids 鈥ouble shut off in one position 鈥rainage design on valve body 鈥erfect for narrow, limited space. Specification 鈥odel No.: BFV-S1 鈥ype: Light Type / Heavy Type 鈥ore: Full Pore 鈥ower: Manual 鈥ize Range: 2" to 30" (DN20 to DN750) 鈥ressure Rating: ANSI Class 150 / DIN PN10 to 40 / JIS 10 to 30K 鈥ain Materials: CS / SS316 鈥eal: PTFE 鈥esign Standard: ASME B16.34 / EN 12516-1 / JIS B2220 鈥onnection: Flange, ASME B16.5 / EN 1092-1 / JIS B2220 鈥ace to Face: Manufacturer Standard 鈥emperature Range: -50 to 200掳C 鈥pplicable Media: Water / Oil / Gas / Chemical / Petrochemical 鈥rigin: Taiwan 鈥arranty: 12 Months Options 鈥panner set for size 1-1/2鈥?to 12鈥?/p> 鈥avit and tightening device for size above 12鈥?/p> 鈥pecial alloy material, for example, Duplex, Super Duplex, Hastelloy, Monel, Inconel, and Titanium Material BodyCF8M / WCB DiscCF8M / CF8 Tightening NutCF8M / CF8 Disc SealPTFE Stop PinSS316 / SS304 Top CoverCF8M / WCB Top Cover SealKEMFLON + PTFE Top Cover Bolts & NutsSS316 / SS304 SpringSTAINLESS STEEL WasherSS316 / SS304 Drain Plug SealPTFE Drain PlugSS316 / SS304 Certification FAQ Q. Can I visit your facility? A: Yes, of course! Please contact us and we would be glad to schedule a tour of our facilities located in Taichung, Taiwan. Q. Are you a trading company or manufacturer? A: We are a manufacturer. Valwell Development Enterprise is a professional valve manufacturer in Taiwan and specializes in designing and producing a full range of ball valves, blind flange valves and double block and bleed gate valves for power generation, chemical and petrochemical, oil and gas, pulp and paper plants, mining, marine, semiconductor and other process industries. Q. What is your capacity? A: Our capacity is 50 tons per month. It means if for a 1/2鈥?flanged ball valve, which weighs about 2.5kg, we can make 20 thousand pieces of it per month. Q: Can I design my own valves and get you to make it? A: Yes, of course! Just get in touch with us and we will see what we can do.Double Disc Valve suppliers website:http://www.valwellballvalves.com/double-disc-valve/