Pilot Valves - Spartan Scientific

Media Separated Valve, 2-Way, 2-Position, Normally Closed

Air Piloted Valve, 2-Way, 2-Position, Normally Open, Stainless Steal Valve Body

The Spartan Scientific Series APVS06 is an inert gas/spring operated, Single Acting Normally Closed, or Double Acting media compatible diaphragm valve, designed for control of high purity, aggressive and corrosive liquid chemical media. It has a miniature overall footprint, and low dead volume. The Series APVS06 features media compatible composite body, and FKM, NBR, and EPDM elastomers to control the 1/2” orifice which afford Cv ratings of 2.45 that far exceed competitive valves of this type and size. Media pressure ratings range from Vacuum to 150 psi and pilot pressure is 60 psi minimum. A Normally Open version can be made using a Normally Open pilot valve. In the case of pilot gas failure, the valve will fail closed. In the case where electric power is lost but pilot gas remains, the valve will remain open. Each valve is tested to bubble tight standard ANSI FCI 70-2 Class VI. The Series APVS06 can be controlled by our proven Spartan Scientific 3-way solenoid pilot valve which enhances operation with manual override and indicator lighted connector options, and is used where sampling, draining, or transferring process fluid are performed.

The Spartan Scientific Series APVS08 is an inert gas/spring operated, 2-Way 2-Position Normally Closed (fail safe), Normally Open or Double Acting media compatible diaphragm valve designed for control of high purity, aggressive and corrosive liquid chemical media. With a small overall footprint, and low dead volume, the Series APVS08 features CPVC bodies, and FKM, NBR, EDPM and PTFE diaphragms to control orifice size of 16mm which afford Cv ratings of 4.70 that far exceed competitive valves of this type. Pressure ratings go from 0 to 120 psi and each valve is tested to bubble tight standard ANSI FCI 70-2 Class VI. The Series APVS08 can be controlled by our proven Spartan Scientific 3-way solenoid pilot valve which enhances operation with manual override and indicator lighted connector options. The Normally Closed version features an optical position indicator showing valve open condition. The Series APVS08 is used where sampling, draining, or transferring process fluid are performed.

The Spartan Scientific Series 4B23 is a media separated, 2-Way 2-Position solenoid operated valve where the media remains isolated from the metal working components within the valve. This creates a barrier to contamination to both the fluid and the operator which serves two purposes. The media remains untainted by the metals in the operator while the close tolerance moving parts of the valve are insulated from the effects of particulates, aggressive chemicals which can affect long term life of solenoid valves. The 4B23 is available in 1/4” or 3/8” NPT connections with orifice ranges from 2.0mm to 5.0mm which gives the 4B23 great flow and operating pressure ranges to meet differing applications. The 4B23 features a DIN quick connect coil or flying leads connection. The valve is designed for long trouble free life with the incorporation of a rolling type diaphragm, life cycle proven metal operator components and a fully encapsulated coil system. The Valve is available in Normally Closed or Normally Open configurations and has two body ports for convenient fluid connection.

The Spartan Scientific Series 4BKR is a 2-Way, 2-Position media separated solenoid valve that is used for the control of ultra pure or corrosive media that would otherwise cause premature failure on wetted type solenoid valves. Featuring the Spartan Scientific low volume valve cavity and the rolling diaphragm, the 4BKR has no convolutions for chemicals to congregate or dead spots for flow. The all encapsulated coil, stainless steel tube and plunger assembly are designed for a long trouble free life. Also featuring a quick connect interface, the valve can be mounted in a gang style on a manifold block by using four fasteners and two o-rings.

The Spartan Scientific Series 4D85 is a direct operating 2-Way 2-Position media separated valve for control of aggressive media that can damage wetted solenoid valve components . The valve incorporates the innovative Spring Diaphragm which retains the media in the valve body effectively separating the metal operator components from the media for extremely long life cycles and media compatibility. The 4D85 is a stand alone body ported valve, available in 1/4”, 3/8”, and 1/2” NPT port connections and offers a full flow 12.5mm orifice. The 4D85 can control media compatible with Glass-Filled Nylon, PEI, and FKM, EPDM, and NBR elastomers. Available in all standard voltages, the 4D85 can control up to 20 PSI inlet pressure with no minimum operating pressure differential. The fully nylon encapsulated coils are available in DIN 43560 Form “A” and flying leads. The 4D85 valve body features robust design elements such as all stainless hardware and metal reinforced port rings which virtually eliminate valve body damage. The 4D85 is designed for a long trouble free life while still controlling compatible aggressive fluids.

The Spartan Scientific 4DKR is a direct operating 2-way 2-position media separated valve for control of aggressive media that can damage wetted solenoid valve components. This unique valve design incorporates the innovative Spring Diaphragm which retains the media in the valve body effectively separating the metal operator components from the media for extremely long life cycles and media compatibility. The 4DKR is a sub-based valve designed to be mounted on a manifold machined to match the design template for mounting screws and flow paths. The design is made so that the manifold can be easily machined using common tools so that common passageways can be machined in a block with one inlet and many outlets reducing the size needed for an installation as well as leak points and fittings with corresponding labor. The valve offers a full flow 12.5mm orifice and can control media compatible with Glass-Filled Nylon, PEI, FKM, EPDM, and NBR elastomers. Available in all standard voltages, the 4DKR can control up to 20 PSI inlet pressure with no minimum operating pressure differential. The fully nylon encapsulated coils are available as DIN 43560 Form A or flying leads. The 4DKR valve body features robust design elements such as all stainless hardware and is designed for a long trouble free life while still controlling compatible aggressive fluids.

The Spartan Scientific Series APV-23 is 2-way, 2-position valve specifically designed for the control of air, oil or steam The Series APV-23 uses a specially designed Teflon Chevron® seal which ensures separation of the media and pilot sections. In the single acting Normally Closed version, the Series APV-23 uses a spring extended pneumatic operator connected to a sealing disc which when retracted unseats from a precision orifice and allows fluid flow. When pilot pressure is removed from the Series APV-23 the seat returns to the orifice and flow stops. Features of the Series APV-23 are the ON-OFF indicator at the top of the pneumatic actuator and can be used for high temperature liquids compatible with the materials of construction and steam. The stainless steel body is standard and is available in sizes ranging from 1/2” to 2.0” NPT and can control media up to 215 psi in various configurations.