shutoff valves
NI Series Hazardous Location Safety Shut-off Valves
Industrial Grade Hazardous Duty Electro-Mechanical Safety Shut-off Valve that stops the flow of gases to the combustion chamber in under a second. Offered in a wide range of body connections, construction materials, with global certifications.
Please sign in to access more documents
Once signed in, you may be able to access additional documents for your account.
Overview
These electrically actuated valves shut off gas or oil lines in less than one second. Normally open versions of these shut off valves are available for vent or process purge lines with MAXON's long-lasting metal-to-metal seating. A variety of optional body materials and body connections provide reliable operation of the gas valve even for highly corrosive fuels and for oxygen. Application flexibility is provided with 3/4 through 6 diameter line sizes, Cv flow factors up to 765, and line pressures up to 125 PSIG (8.6 bar).
Features & Benefits:
Features & Benefits:
- 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 servicqCXe 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
Specifications
Environmental Conditions
- Ambient Temperature Range
- -20 to +140 deg F (-28 to +60 deg C)
- Enclosure Rating
- NEMA 1, 3, 3S, 4, 12; Optional NEMA 4X trim
Actuation, Valve & Motion Control Specifications
- Valve Type
- Shut-off and vent valves (electrically actuated)
- Position Switch Options
- SPDT signal switches, proof-of-open/closed switches
- Position Indicator
- Large two-color open-shut indicator
Dimensions & Size Specifications
- Valve Sizes
- 3/4 to 6 in diameter line sizes
Material Specifications
- Valve Body Material
- One-piece cast iron or cast steel
Temperature Control/Measurement
- Temperature Rating
- Fluid - Rising stem: -20 to +140 deg F (-28 to +60 deg C)
- Swinging gate: -20 to +250 deg F (-28 to +121 deg C)
- Temperature Class
- T5 (AC)
Overview
- Product Type
- Electrically actuated safety shut‑off and vent valves for hazardous locations
Pressure Specifications
- Line Pressure
- Up to 600 psig
Standards & Certifications
- Hazardous Location Approvals
- Class I Div 2 (Groups A, B, C, D); Class II Div 2 (Groups F, G); Class III Div 2
- Approvals
- Factory Mutual approval for hazardous locations, Industrial Risk Insurers for block/bleed/vent systems, FM 7400 standard compliance, CSA 6.5 standard compliance, Non-Incendive Component Criteria per NEC/NFPA 70-1996, Article 500-2(a)(6), Valve bodies designed to ANSI; ISO standards also available
Performance, Flow & Capacity
- Flow Coefficient (Cv/Kvs)
- Cv flow factors up to 765
Product Design & Configuration
- Body Design
- Straight‑through flow using swinging gate or rising stem (guillotine action) designs
Environmental Conditions
- Ambient Temperature Range
- -20 to +140 deg F (-28 to +60 deg C)
- Enclosure Rating
- NEMA 1, 3, 3S, 4, 12; Optional NEMA 4X trim
Actuation, Valve & Motion Control Specifications
- Valve Type
- Shut-off and vent valves (electrically actuated)
- Position Switch Options
- SPDT signal switches, proof-of-open/closed switches
- Position Indicator
- Large two-color open-shut indicator
Dimensions & Size Specifications
- Valve Sizes
- 3/4 to 6 in diameter line sizes
Material Specifications
- Valve Body Material
- One-piece cast iron or cast steel
Temperature Control/Measurement
- Temperature Rating
- Fluid - Rising stem: -20 to +140 deg F (-28 to +60 deg C)
- Swinging gate: -20 to +250 deg F (-28 to +121 deg C)
- Temperature Class
- T5 (AC)
Overview
- Product Type
- Electrically actuated safety shut‑off and vent valves for hazardous locations
Pressure Specifications
- Line Pressure
- Up to 600 psig
Standards & Certifications
- Hazardous Location Approvals
- Class I Div 2 (Groups A, B, C, D); Class II Div 2 (Groups F, G); Class III Div 2
- Approvals
- Factory Mutual approval for hazardous locations, Industrial Risk Insurers for block/bleed/vent systems, FM 7400 standard compliance, CSA 6.5 standard compliance, Non-Incendive Component Criteria per NEC/NFPA 70-1996, Article 500-2(a)(6), Valve bodies designed to ANSI; ISO standards also available
Performance, Flow & Capacity
- Flow Coefficient (Cv/Kvs)
- Cv flow factors up to 765
Product Design & Configuration
- Body Design
- Straight‑through flow using swinging gate or rising stem (guillotine action) designs
- Ambient Temperature Range : -20 to +140 deg F (-28 to +60 deg C)
- Valve Type : Shut-off and vent valves (electrically actuated)
- Valve Sizes : 3/4 to 6 in diameter line sizes
- Valve Body Material : One-piece cast iron or cast steel
- Temperature Rating : Fluid - Rising stem: -20 to +140 deg F (-28 to +60 deg C)|Swinging gate: -20 to +250 deg F (-28 to +121 deg C)
- Temperature Class : T5 (AC)
- Product Type : Electrically actuated safety shut‑off and vent valves for hazardous locations
- Position Switch Options : SPDT signal switches, proof-of-open/closed switches
- Position Indicator : Large two-color open-shut indicator
- Line Pressure : Up to 600 psig
- Hazardous Location Approvals : Class I Div 2 (Groups A, B, C, D); Class II Div 2 (Groups F, G); Class III Div 2
- Flow Coefficient (Cv/Kvs) : Cv flow factors up to 765
- Enclosure Rating : NEMA 1, 3, 3S, 4, 12; Optional NEMA 4X trim
- Body Design : Straight‑through flow using swinging gate or rising stem (guillotine action) designs
- Approvals : Factory Mutual approval for hazardous locations, Industrial Risk Insurers for block/bleed/vent systems, FM 7400 standard compliance, CSA 6.5 standard compliance, Non-Incendive Component Criteria per NEC/NFPA 70-1996, Article 500-2(a)(6), Valve bodies designed to ANSI; ISO standards also available
Name
Description
File Size
Date
Size
Category@category|Type@type
Filters
Product Number
Please sign in to view part numbers available for purchase based on your account Sign In
Part Number
Description
Leaf Category
Thumbnail
Add to list
075S8112
.75" NI Pneumatic Shut-Off Valve
075S8112
.75" NI Pneumatic Shut-Off Valve
100S8122
1" NI Pneumatic Vent Valve
100S8122
1" NI Pneumatic Vent Valve
