Product Name: Precision Dispensing Valve Spring Seal Model NO.: walle variseals Standard: Standard, Nonstandard Shape: Round Shell + Spring Performance: Wear Type: Rotary Seal Application: Valve Material: PTFE/Peek/UHMW-PE Applicable Colloid: UV Curing Adhesive, Silicone Oil, Flux, Ink, Coagu Color: Black, White, Brown, Gray, Yellow, Gold Trademark: Walle Variseal Transport Package: Carton Specification: per your request Origin: Guangdong, China HS Code: 3926901000 Product Description Precision Dispensing valve spring sealIt is designed to dispense low to high viscosity gels from small to microliters to large continuous strips. The special feature of the design is that the spring-loaded fluoropolymer needle fill compensates for wear, which greatly reduces downtime. Since the needle closing device is located at the end of the dispensing valve, substantially no colloid remains in the valve body. The crisp colloidal cutting action results in a clean, smooth colloidal section.The gel flow rate through the DV-09 valve depends on the opening time of the dispensing valve, the colloid pressure, the flow control adjustment, the dispensing line port diameter, and the colloidal viscosity.Characteristics:• Ideal for low viscosity liquid seals or very fine line dispensing• The needle closure provides a straight shape at the end of the dispensing line• Adjustable gel control• Low maintenance costs•Quick response• No glue residue• Actively shut down• The number of dispensing speeds per minute exceeds 500 points• Suitable for all Nordson ASYMTEK dispensing systemsApplicable colloid:• UV curing adhesive• Silicone oil• Flux•Ink• Coagulant• Solvent•mercuryTypical Jacket Materials:Material CodeCompound Features & Recommended ServiceChemicalWear10Virgin PTFE, premium grade, excellent material for gases and cryogenic applications, excellent chemical resistance, FDA approved, API 6A qualifiedEP9Modified PTFE, improved creep and extrusion resistance, excellent for static applications, low gas per_x005f_x005f_x0002_meability, good cryogenic properties, moderate to high vacuum service, FDA approved, API 6A qualifiedEF16Fiber Glass/Moly filled, excellent wear and creep resistance, good abrasion resistance for sealing non_x005f_x0002_lubricated media, good extrusion resistance, highly wear resistant blend, API 6A qualifiedEE15Carbon/Graphite filled, suitable for dynamic sealing of steam and water as well as poorly lubricated, recommended for dry or insufficiently lubricated applications, API 6A qualifiedEE21Graphite filled, very low coefficient of friction, good for water service, excellent for dry or poorly lubricated applications, API 6A qualifiedEF6Carbon Fiber filled, excellent wear and creep resistance, good electrical conductivity, good in water service, API 6A qualifiedEE80Mineral filled, used for sealing food products, good wear properties for both rotary and linear applications, FDA compliant material for sanitary food and pharmaceutical processingGG88Ekonol filled, good wear resistance but is not abrasive against non-hardened surfaces, should not be used in steam applications, best in dynamic applications running against soft metalsGG35Stainless Steel filled, excellent material for steam service, good compression strength proportion along with better chemical resistance than bronze filled PTFEFG1Bronze filled, suited for high speed dynamic sealing of lubricating media, should not be used for chemical servicePE2Polyimide filled, excellent wear resistance but not abrasive against non-hardened surfaces, should not be used in steam applicationsGE24Virgin PEEK, high strength material predominately used for anti-extrusion devices, such as back-up ring and support ringsGG23Carbon Fiber filled PEEK, improved high temp properties, extremely rigid, high strength material used for back-up rings, guide rings, and support rings, API 6A qualifiedGG22PTFE filled PEEK, lower coefficient of friction than virgin PEEK, excellent high heat and wear resistance, chemically resistant to aggressive environmentsGE26UHMW, best material for reciprocating service in water or water based fluids, typically used for sealing food products, paints, adhesives , excellent wear and abrasion resistanceGE101ETFE, melt processible fluoropolymer with good impact, abrasion and wear resistance, used in applica_x005f_x005f_x0002_tions where gamma radiation resistance is required, superior to nuclear radiationFEE - excellent, G - good, F - fair, P - poorTypical Spring Materials:Material CodeNameDescriptionA301 Stainless SteelGood corrosion resistance for general applicationsBInconel 718For extreme temperatures. Good resilience and tensile properties.CElgiloyThe most resilient spring. Excellent chemical compatibility and corrosion resistance.Meets N.A.C.E. MR-01-75DHastelloy C-276High nickel content for maximum corrosion resistance. Meets N.A.GE. MR-01-75E304 Stainless SteelMeets N.A.C.E. MR-01-75. Good for general applications requiring corrosionresistance and non-magnetic characteristicsF17-7 PH Stainless SteelGood for cryogenic applications. Used in many military-aerospace requirements.G316 Stainless SteelA good corrosion resistant alloy for applications requiring higher chemical compatibilityH302 Stainless SteelTypical non-magnetic 300 series stainless steelWalle have many years production experience and industry field application experience, we aimed at the different harsh sealing environments and developed various of materials suitable for applications. Improving all customers profit and saving all customers cost. Walle automatic production equipments and advanced testing equipments provide astrong guarantee for the manufacture of high quality Spring seals made of PTFE products.Any questions please do not hesitate to contact me. It is our pleasure to be on service of you! Dongguan Walle Sealing Technology Development Co., LtdTel: 86-769-33291139 /22762051Mobile: 13620011767Fax: 86-769-22762052URL: www.walleseals.com
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