NI Series Hazardous Location Safety Shut-off Valves

- Electrically actuated valves shut off gas or oil lines in less than one second - Normally open versions available for vent or process purge lines with Maxon’s longlasting metal-to-metal seating - Application flexibility provided with 3/4” through 6” diameter line sizes, Cv flow factors up to 765, and line pressures up to 600 PSIG - All Maxon top assembly enclosures meet approval sanctions: – NEMA 1, 3, 3S, 4, and 12; Available with NEMA 4X trim (optional) “NI” valves are FM approved for hazardous locations: Class I, Division 2, Groups A, B, C, and D: T5 (AC) Class II, Division 2, Groups F and G: T5 (AC) Class III, Division 2: T5 (AC)“NI” Valves are built in accordance with the Non-IncendiveComponent Criteria as outlined by NEC/NFPA 70-1996 Articles 500-2(a)(6) - Sanctioned service valve approvals: – FM (Factory Mutual) sanctioned – IRI (Industrial Risk Insurers) approvable for block/bleed/vent systems – Contact your Maxon sales representative for international sanctions information - Handles flowing fluid temperatures: – Rising stem bodies from -20°F (-28°C) to +140°F (+60°C) – Swinging gate bodies from -20°F (-28°C) to +250°F (+121°C) – Any ambient temperature from -20°F (-28°C) to +140°F (+60°C) - Valve bodies designed to ANSI (American National Standards Institute) standards. ISO (International Standards Organization) standards also available - Various application requirements met with manual reset or automatic reset motorized operators - Minimize line pressure drops with straight-through flow swinging gate or rising stem (guillotine action) valve bodies - Minimal field maintenance required - Positive visual indication of valve body position is provided by large two-color open-shut indicator - Bodies built for heavy duty industrial service of one-piece cast iron or cast steel - Installation piping convenience obtained from field rotatable top assemblies - Special operating features available in Special Service Packaged versions - Micro-lapped seating wears in, not out - Positive indication of valve body position provided through: – Auxiliary SPDT signal switches mounted inside valve top enclosure. – Proof-of-open and/or Proof-of-closed position switches - Built-in over travel valve body design meets requirements of insurance standards - External junction box requirement eliminated with built-in valve wiring compartment and electrical terminal block - Manual reset valves may be mounted in overhead lines with use of wheel and chain option - Companion flange sets available to simplify installation