Armstrong

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    GD-10/GD-10F/AF-10 DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR AIR AND NON-CORROSIVE GASES

    The GD-10/10F is a lightweight direct-acting diaphragm valve used primarily for pneumatic tool air supply and non-hazardous gas regulation. Screwed connections make it easy to support in position without external sensing lines or other parts. Zinc or aluminum bodies eliminate rust and scale. Plug, seat and diaphragm are renewable in-line, and you can make quick adjustments externally with a locking handle. A quarter-inch pressure gauge connection is standard, and all units are capable of tight shutoff for dead-end service.

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    GD-200/200H DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR AIR, WATER, NON-CORROSIVE AND NON-VISCOUS LIQUIDS

    The GD-200/200H valves offer high capacity and highly accurate control, with a large, cupped diaphragm for a long stroke. Compact and rugged, the GD-200’s composition valve and bronze metal seat mean high performance over a longer service life. Well suited to non-viscous liquid pressure reduction, the valve is widely applied in domestic water applications, construction equipment, irrigation, tank-car loading, and industrial or commercial air conditioning. Upstream variations do not affect the balanced pressure valve, and the composition disc ensures tight shutoff. The turndown ratio is 10:1, and sizes range from 2″ through 6″ (15–50 mm).

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    GD-2000K DIRECT-ACTING PRESSURE REDUCING VALVES

    AIR-LOADED VALVES FOR STEAM

    The GD-2000K is an ideal choice when set-point changes are frequent, access to the valve is difficult and steam quality is poor. The GD-2000K comes with either NPT or flanged connections for quick, easy installation. It also comes with a durable ductile iron body and features double stainless steel diaphragms and hardened stainless working parts, renewable in-line. High Cv and 10:1 turndown ratio. Single-seated for dead-end service.

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    GD-24 DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR WATER

    An industrial-grade valve for water systems, the GD-24 is lightweight, compact and economical. The valve comes with screwed connections and will mount in any position. It requires no external sensing lines, and its bronze body and high-temperature diaphragm are suitable for hot or cold water service. The valve, seat and diaphragm are renewable in-line. The GD-24 has an external adjusting screw with lock and is available in six sizes, 1/2″ through 2″ (15–50 mm).

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    GD-30/30S DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR STEAM, AIR AND NON-CORROSIVE GASES

    The GD-30 is a compact, high-performance direct-acting valve. Economical to buy and use, it is ideal for those low- to moderate-flow applications where accuracy of +/- 10% is acceptable. The GD-30 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds, humidifiers, small heaters and applications in food processing. It provides tight shutoff for dead-end service on steam.

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    GD-45 DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR STEAM, AIR AND NON-CORROSIVE GASES

    The GD-45 is a compact, high-performance direct-acting valve. Inexpensive to buy and use, it is ideal for those moderate-flow applications that do not justify the higher cost of pilot-controlled valves. The GD-45 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds, humidifiers, small heaters and applications in food processing.

    QUICK, EASY INSTALLATION

    • Lightweight and compact
    • Constructed of ductile iron for greater durability and higher inlet pressure
    • Screwed connections
    • No external sensing lines or parts required
    • Maximum turndown ratio 10:1
    • ANSI Class IV

    SIMPLE SELECTION

    • 1/2″, 3/4″ and 1″ (15, 20 and 25 mm) sizes
    • Match pipe size normally
    • Three pressure-range springs (Use smaller range spring for best control when ranges overlap.)

    LONG LIFE AND EASY MAINTENANCE

    • Highly resilient phosphor-bronze bellows-style diaphragm
    • Hardened stainless steel working parts
    • Integral strainer (removable for cleaning) for protection from wear or dirt
    • Teflon gaskets used at all joints for improved leakage prevention
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    GD-6N (STEAM)/GD-6 (LIQUID, GAS) DIRECT-ACTING PRESSURE REDUCING VALVES

    FOR STEAM, AIR AND WATER

    The GD-6N and GD-6 are compact, direct-acting diaphragm valves ideal for low-flow applications, including laundry/dry-cleaning equipment, hospital equipment, tire/plastic molds and food processing. Lightweight and compact, the valves require no external sensing lines or additional parts. An external adjusting screw with locking nut and cover make for quick, easy setting and adjustment. The valves provide tight shutoff for dead-end service. Valves include removable stainless steel diaphragm, hardened stainless steel working parts (6N), integral removable strainer (6N) and in-line renewable valve and seat. The GD-6N and GD-6 are available in 3/8″, 1/2″ and 1″ (10, 20 and 25 mm) sizes, with a choice of two set pressure-range springs.

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    GP-1000 INTERNALLY PILOTED PRESSURE REDUCING VALVES

    FOR STEAM, AIR AND NON-CORROSIVE GASES

    The GP-1000 Series valves are pilot-controlled for accurate regulation of pressure under widely ranging flow. The internal-pilot design eliminates external components and piping.

    Internally piloted GP Series valves are capable of larger capacity and greater accuracy than direct-acting valves. Internally piloted GP Series valves are rated for dead-end service and have a 20:1 turn down ratio and an accuracy of +/-5% of set point.

    Completely supported by piping, lightweight GP Series valves install easily with NPT or flanged connections. A stainless steel diaphragm, hardened stainless steel working parts and integral removable strainer team up to provide higher performance over a long, trouble-free service life.

    Valves are equipped with a caged main valve assembly (separate shutoff surfaces and flow-control ports), piston valve rings for longer life, and an external adjusting screw with locking nut and cover. All working parts are renewable in-line. For air service, a Teflon®; seat ensures tight shutoff.

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    GP-2000 EXTERNALLY PILOTED PRESSURE REDUCING VALVES

    FOR STEAM SERVICE

    The GP-2000 is a high-performance, externally piloted reducing valve for large-capacity requirements. Typical use is on intermittent service, including applications such as heat exchangers, steam coils, rotating dryers, process equipment and heating systems. With a 20:1 rangeability and high Cv, the GP-2000 is reliable and accurate (+/-1% of pressure set point from 5% to 100% of flow) over a long, trouble-free service life. Hardened stainless steel working parts are renewable in-line. The GP-2000 is single-seated for dead-end service, and it is available with both NPT (1/2″–2″) (15–50 mm) and flanged connections in 2″–6″ sizes (50–150 mm).

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    GP-2000CS EXTERNALLY PILOTED PRESSURE REDUCING VALVES

    CARBON STEEL/SPRING OPERATOR

    FOR STEAM SERVICE

    The GP-2000CS is a high-performance, externally piloted reducing valve for large-capacity requirements. Typical use is on intermittent service, including applications such as heat exchangers, steam coils, rotating dryers, process equipment and heating systems. With a 20:1 rangeability and high Cv, the GP-2000CS is reliable and accurate (+/-1% of pressure set point from 5% to 100% of flow) over a long, trouble-free service life. Stellited stainless steel working parts are renewable in-line. The GP-2000CS is single-seated for dead-end service, and it is available with both NPT (1/2″–2″) (15–50 mm) and flanged connections in 2″–4″ sizes (50–100 mm).

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    GP-2000K-1/GP-2000K-3/GP-2000K-6 EXTERNALLY PILOTED DIAPHRAGM-OPERATED PRESSURE REDUCING VALVES

    DUCTILE IRON/AIR OPERATOR

    AIR-LOADED VALVES FOR STEAM

    A high-performance externally air-piloted pressure-reducing valve, the GP-2000K-1/GP-2000K-3/GP-20000K-6 is an ideal choice when set-point changes are frequent and access to the PRV is difficult. The valve comes totally assembled and requires no field installation except downstream sensing line and air connection.

    High Cv, 20:1 turndown ratio and accurate control +/-1% of pressure set point from 5% to 100% of flow. A rugged ductile iron body, hardened stainless steel working parts, double stainless steel diaphragms and in-line repairability add up to reliability on the job. Single-seated for dead-end service.

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    GP-2000L EXTERNALLY PILOTED PRESSURE REDUCING VALVES

    FOR STEAM SERVICE WITH LARGE CAPACITY AND LOW INLET PRESSURE REQUIREMENTS

    The GP-2000L is a high-performance, externally piloted reducing valve for large-capacity and low inlet pressure requirements.  The GP-2000L is reliable and accurate (+/-1% of pressure set point from 5% to 100% of flow) over a long, trouble-free service life. Hardened stainless steel working parts are renewable in-line. The GP-2000L is single-seated for dead-end service, and it is available with both NPT (1/2″–2″) (15–50 mm) and flanged connections in 2″–4″ sizes (50–100 mm).