Welcome To GRIT-Gas Regulators & Instrumentation Tools

Products

  • RT-500 Runtime Device

    The NMT® RT500 is a digital device designed for applications where the installation of a gas meter is not always practical or cost effective. These modules monitor ‘on time’ of various inputs and initiates a pulse output every 36 or 60 seconds. The RT500 provides the most cost effective means of allocating gas usage of appliance ‘on time’.

    Features

    • Monitors ‘on time’ of various applications
    • Compact design

    Versions

    • RT500-ST: 12;24V initiation
    • RT500-PS: Pressure switch or relay initiation (gas water heater)
    • RT500-FP: millivolt initiation (fireplace, gas water heater)

    Literature & Resources

    RT500 PDF

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  • NDM

    Pipe Size: 1-1/2″npt to 6″ FL

    The NMT® NDM rotary gas meter is a positive displacement type gas meter where, unlike other meters, measurement accuracy is not affected by changes in specific gravity, changing pressures or fluctuating flows. With its compact size, ease of maintenance and robust performance the NDM rotary meter is the best choice for gas measurement where accuracy and dependability is required.

    Features

    • Rotatable CF index, M3 available
    • Indoor/outdoor, 100% sealed UV resistant index
    • Multi-position flow orientation capable
    • Pulse Output standard
    • Up to 38,000 scfh flow
    • 290 psig max pressure

    Standards

    • EN12480
    • ISO9951
    • NMi
    • ANSI

    Literature & Resources

    NDM PDF

    NDM Manual

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  • NG4

    Pipe Size: 3/4″

    The NMT® NG4 diaphragm gas meter is made to measure accurately submetering applications of gas appliances. The aluminum construction along with the sealed register allows it to be installed in many applications where size is of utmost importance. The pulse output allows for integration of remote totalizers and communications devices.

    Features

    • Submetering Applications
    • NTEP – CA Approved
    • State of MA Approved
    • Pulse Output standard
    • Aluminum body

    Literature & Resources

    NG4 PDF

    Massachusetts Approval Listing

    California NTEP Certification

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  • NGRB Series

    NGRB

    Pipe Size: 2″ and 3″ FL

    Outlet Pressure Range: 7″ to 21.4 psig

    The NMT® NGRB Series regulators are single stage, self-operated regulators for heavy duty work under high, medium and low-pressure applications, for all types of non-corrosive gases. The NGRB Series regulator has a built-in partial relief valve (token relief), which allows occasional rises in the outlet pressure above the relief pressure to be released gradually into the atmosphere without triggering an overpressure shut-off valve or high limit switch due to occurrences such as sudden variations in flow or variations in temperature causing an increase in downstream pressure.

    NOTE: The NGRB regulator requires a downstream sensing line that senses the downstream pressure to operate. This sensing line must be installed within the piping system and connected to the regulator at its appropriate connection.

    Features

    • Internal token relief
    • Corrosion-resistant exterior
    • High capacity at low inlet pressures
    • Internal balanced valve allowing low lock up with high inlet pressures
    • Field-interchangeable springs
    • Designed for easy maintenance

    Specifications

    • Gas types: Natural gas, LPG, other non corrosive dry gases
    • Maximum inlet pressure: 145 psig
    • Maximum emergency inlet pressure: 145 psig
    • Operating temperature: -4°F to +140°F

    Literature & Resources

    NGRB PDF

    NGRB Install PDF

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  • NGR08

    Pipe Size: 1-1/4″ to 3″ FL

    Outlet Pressure Range: 2″ to 7 psig

    The NMT® NGR08 series spring-loaded gas regulators with internal relief provide consistent and controlled pressure in various residential, industrial, and commercial applications. The NGR08 meets ANSI Z21.80 for Class I, Class II, Vent Limiting, and OPD (Overpressure Protection Device) applications and is designed for use in many applications where non-corrosive dry gases are used.

    Features

    • ANSI Z21.80 certified
    • Vent Limiter Option
    • Internal Relief – OPD
    • Outlet pressures up to 7 psig
    • Conforms to ANSI B109.4
    • Corrosion-resistant exterior

    Specifications

    • Pipe size: 1-1/4″ NPT to 3″ FL
    • Gas types: Natural gas, LPG, other non corrosive dry gases
    • Maximum inlet pressure: 25 to 125 psig per orifice
    • Maximum emergency inlet pressure: 175 psig
    • Operating temperature: -40°F to +140°F

    Literature & Resources

    NGR08 PDF

    NGR08 Relief Curves

    Read more
  • NGR06

    Pipe Size: 1-1/4″ to 3″ FL

    Outlet Pressure Range: 2″ to 7 psig

    The NMT® NGR06 series spring-loaded gas regulators with internal relief provide consistent and controlled pressure in a variety of residential, industrial, and commercial applications. The NGR06 meets ANSI Z21.80 for Class I, Class II, Vent Limiting, and OPD (Overpressure Protection Device) applications and is designed to be used in many applications where non-corrosive dry gases are used.

    Features

    • ANSI Z21.80 certified
    • Vent Limiter Option
    • Internal Relief – OPD
    • Outlet pressures up to 7 psig
    • Conforms to ANSI B109.4
    • Corrosion-resistant exterior

    Specifications

    • Gas types: Natural gas, LPG, other non corrosive dry gases
    • Maximum inlet pressure: 25 to 125 psig per orifice
    • Maximum emergency inlet pressure: 175 psig
    • Operating temperature: -40°F to +140°F

    Literature & Resources

    NGR06 PDF

    NGR06 Relief Curves

    Read more
  • NGR04

    Pipe Size: 1-1/4″ to 3″ FL

    Outlet Pressure Range: 3″ to 3 psig

    The NMT® NGR04 series spring-loaded gas regulators with internal relief provide consistent and controlled pressure in a variety of residential, industrial, and commercial applications. The NGR04 meets ANSI Z21.80 for Class I, Class II, Vent Limiting, and OPD (Overpressure Protection Device) applications and is designed to be used in many applications where non-corrosive dry gases are used.

    Features

    • ANSI Z21.80 certified
    • Vent Limiter Option
    • Internal Relief – OPD
    • Outlet pressures up to 3 psig
    • Conforms to ANSI B109.4
    • Corrosion-resistant exterior

    Specifications

    • Gas types: Natural gas, LPG, other non corrosive dry gases
    • Maximum inlet pressure: 10 to 125 psig per orific
    • Maximum emergency inlet pressure: 175 psig
    • Operating temperature: -40°F to +140°F

    Literature & Resources

    NGR04 PDF

    NGR04 Relief Curves

    Read more
  • NGR02

    Pipe Size: 1/2″ to 1-1/4″

    Outlet Pressure Range: 2″ to 5 psig

    The NMT® NGR02 series spring-loaded gas regulators with internal relief provide consistent and controlled pressure in a variety of residential, industrial, and commercial applications. The NGR02 meets ANSI Z21.80 for Class I, Class II, Vent Limiting, and OPD (Overpressure Protection Device) applications and is designed to be used in many applications where non-corrosive dry gases are used.

    Features

    • ANSI Z21.80 certified
    • Vent Limiter Option
    • Internal Relief – OPD
    • Outlet pressures up to 5 psig
    • Conforms to ANSI B109.4
    • Corrosion-resistant exterior

    Specifications

    • Gas types: Natural gas, LPG, other non corrosive dry gases
    • Maximum inlet pressure: 10 to 125 psig per orifice
    • Maximum emergency inlet pressure: 175 psig
    • Operating temperature: -40°F to +140°F

    Literature & Resources

    NGR02 PDF

    NGR02 Relief Curves

    Read more
  • N5 OPD

    Pipe Size: 3/8″ to 2″

    Outlet Pressure Range: 7″ to 14″ wc

    The NMT® N5 OPD (Overpressure Protection Device) Series gas regulator is an ANSI Z21.80 certified self-operating OPD two-stage regulator with vent limiting for use in residential, commercial, and industrial applications. The OPD function allows for installation in applications where pressures must be limited to 2psig per ANSI Z21.80. The standard vent limiting feature allows for indoor use without the need to pipe external vent lines while still maintaining OPD protection.

    Features

    • ANSI Z21.80 certified
    • Vent limiter STANDARD (No need to install vent pipe!)
    • Multi-position installation
    • Extended corrosion resistance
    • Up to 10 psig operating pressure

    Specifications

    • Maximum inlet pressure: 10 psig
    • Maximum Emergency Inlet Exposure Pressure: 85 psig (inlet side only)
    • Ambient Temperature Range: -40°F to +212°F
    • Gas Type: Natural gas, LPG, air, other non-corrosive gas
    • Options: Vent cap, vent elbow

    Literature & Resources

    N5 OPD PDF

    Read more
  • N5 Series

    N5

    Pipe Size: 3/8″ to 2″

    Outlet Pressure Range: 7″ to 1.5 psig

    The NMT® N5 Series gas regulator is an ANSI Z21.80 certified self-operating regulator with a vent limiting option for use in residential, commercial, and industrial applications. The N5 vent allows for indoor use without the need to pipe external vent lines. With the added benefit of extended corrosion resistance, the N5 allows for various applications where the best regulation performance is required.

    Features

    • ANSI Z21.80 certified
    • Vent limiter option (No need to install vent pipe)
    • Multi-position installation
    • Extended corrosion resistance
    • Up to 15 psig operating pressure

    Specifications

    • Gas types: Natural gas, LPG, air, other dry non corrosive gases
    • Maximum inlet pressure: 2 psig; 15 psig max
    • Maximum inlet pressure w/ vent limiter: 2 psig; 10 psig max
    • Maximum emergency inlet pressure: 85 psig

    Literature & Resources

    N5 Series PDF

    Read more
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