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    32 Products
    About Air Preparation
    industrial info icon

    Customize your air preparation system with dryers, filters, and other purifying parts.

    Tamper-Resistant Compressed Air Regulators

    Image of Product. Front orientation. Compressed Air Regulators. Tamper-Resistant Compressed Air Regulators, Key Lock.
    Image of Product. Front orientation. Compressed Air Regulators. Tamper-Resistant Compressed Air Regulators, Removable T-Handle.
    Image of Product. Front orientation. Compressed Air Regulators. Tamper-Resistant Compressed Air Regulators, Knob-Locking Clip.

    Key Lock

    Removable

    T-Handle

    Knob-Locking

    Clip

    Prevent unauthorized or accidental pressure changes to these regulators—they let you lock down the set pressure. Use these regulators to adjust and maintain the pressure of your compressed air. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install them in your air line after your filters.
    Key Lock—Regulators with a key lock only let those with the key adjust the pressure. The lock is universal, so you can use the same key for multiple regulators.
    Removable T-Handle—Regulators with a removable T-handle can only be adjusted when the handle is in place. Remove the T-handle to prevent further adjustments.
    Knob-Locking Clip—Regulators with a knob-locking clip cannot be adjusted when the clip is installed between the knob and the body of the regulator. To adjust the pressure, remove the knob and clip, then reattach the knob.
    Regulators
    Mounting
    Brackets
    Pipe
    Size
    Overall
    Inlet
    Outlet
    Max. Flow Rate
    @ Pressure
    Max. Pressure,
    psi
    Gauge
    Included
    No. of Gauge
    Ports
    Wd.
    Ht.
    Housing
    Material
    Max. Temp.,
    ° F
    Includes
    Regulating
    Accuracy
    Choose Pressure Regulation, psi
    Each
    Each
    Key Lock
     
    651 Series—NPT Female Inlet × NPT Female Outlet
    1/8
    		1/8
    		28 scfm @ 145 psi232Yes—3 1/8"4 13/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T3010000000———0
    1/4
    		1/4
    		72 scfm @ 145 psi232Yes—3 1/8"4 13/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T302000000———0
     
    652 Series—NPT Female Inlet × NPT Female Outlet
    3/8
    		3/8
    		228 scfm @ 145 psi232Yes—3 7/16"5 11/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T303000000———0
    1/2
    		1/2
    		245 scfm @ 145 psi232Yes—3 7/16"5 11/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T304000000———0
     
    653 Series—NPT Female Inlet × NPT Female Outlet
    3/4
    		3/4
    		353 scfm @ 145 psi290Yes—3 7/8"7 9/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T305000000———0
    1
    		1
    		406 scfm @ 145 psi290Yes—3 7/8"7 9/16"Aluminum120Mounting Bracket±5 psi3 to 45, 7 to 1458080T306000000———0
     
    Removable T-Handle
     
    NPT Female Inlet × NPT Female Outlet
    1/4
    		1/4
    		37 scfm @ 100 psi250No23"5 1/2"Aluminum250—±5%0 to 50, 0 to 125, 0 to 2004328K1000004328K32000000
    3/8
    		3/8
    		37 scfm @ 100 psi250No23"5 1/2"Aluminum250—±5%0 to 50, 0 to 125, 0 to 2004328K2000004328K3200000
    1/2
    		1/2
    		60 scfm @ 100 psi250No23 5/8"6 3/4"Aluminum250—±5%0 to 50, 0 to 125, 0 to 2004328K3000004328K3300000
    3/4
    		3/4
    		120 scfm @ 100 psi250No24 3/4"8 3/8"Aluminum250—±5%0 to 50, 0 to 125, 0 to 2004328K40000004328K3400000
    1
    		1
    		120 scfm @ 100 psi250No24 3/4"8 3/8"Aluminum250—±5%0 to 50, 0 to 125, 0 to 2004328K50000004328K3400000
     
    Knob-Locking Clip
     
    1000 Series—NPT Female Inlet × NPT Female Outlet
    1/8
    		1/8
    		45 scfm @ 100 psi250Yes—1 5/8"3 5/8"Aluminum140—Not Rated0 to 1409172K1600000———0
    1/4
    		1/4
    		59 scfm @ 100 psi250Yes—1 5/8"3 5/8"Aluminum140—Not Rated0 to 1409172K1800000———0
     
    Accessories and Replacements for Regulators
    Pressure gauges are for use with removable T-handle regulators.
    Mounting brackets attach the regulator to a wall or equipment.
    Each
    Replacement Pressure Gauge for Key Lock Regulators8080T35000000
    Gauge for Removable T-Handle Regulators with 0-50 psi Pressure Regulation4328K2500000
    Gauge for Removable T-Handle Regulators with 0-125 psi Pressure Regulation4328K2400000
    Gauge for Removable T-Handle Regulators with 0-200 psi Pressure Regulation4328K2700000
    Mounting Bracket for Series No. 1000 Regulators9172K2400000

    Tamper-Resistant Precision Compressed Air Regulators

    Prevent unintentional or unauthorized pressure changes in lines that demand constant, consistent air pressure. These regulators have a tamper-resistant cover that threads over the adjusting screw to block access. Use them to deliver steady air pressure in sensitive applications that rely on it for precise force and movement. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install them in your air line after filters.
    Relieving Regulators
    Image of Product. Front orientation. Compressed Air Regulators. Tamper-Resistant Precision Compressed Air Regulators.
    BSPP Inlet Thread—BSPP threads are also known as G threads.
    Regulators
    Mounting
    Brackets
    Pipe
    Size
    Overall
    Inlet
    Outlet
    Max. Flow Rate
    @ Pressure
    Max. Pressure,
    psi
    Gauge
    Included
    No. of Gauge
    Ports
    Wd.
    Ht.
    Housing
    Material
    Max. Temp.,
    ° F
    Choose Pressure Regulation, psi
    Each
    Each
    NPT Female Inlet × NPT Female Outlet
     
    ±0.1% Regulating Accuracy
    1/4
    		1/4
    		80 scfm @ 100 psi250No23"7"Aluminum1600 to 15, 0 to 1508810N1100000001888K500000
    3/8
    		3/8
    		80 scfm @ 100 psi250No23"7"Aluminum1600 to 15, 0 to 1508810N120000001888K50000
    1/2
    		1/2
    		80 scfm @ 100 psi250No23"7"Aluminum1600 to 15, 0 to 1508810N130000001888K50000
     
    BSPP Female Inlet × BSPP Female Outlet
     
    ±0.1% Regulating Accuracy
    1/4
    		1/4
    		80 scfm @ 100 psi250No23"7"Aluminum1600 to 15, 0 to 1508810N140000001888K50000
     

    Tamper-Resistant Padlockable Covers for SMC Modular Compressed Air Regulators

    Image of ProductInUse. Shown Installed (Padlock Not Included). Front orientation. Compressed Air Regulator Locks. Tamper-Resistant Padlockable Covers for SMC Modular Compressed Air Regulators.
    Image of Product. Front orientation. Compressed Air Regulator Locks. Tamper-Resistant Padlockable Covers for SMC Modular Compressed Air Regulators.
    Image of Attribute. Shown Open. Front orientation. Compressed Air Regulator Locks. Tamper-Resistant Padlockable Covers for SMC Modular Compressed Air Regulators.

    Shown Installed (Padlock Not

    Included)

    Shown Open

    Guard against accidental or unauthorized pressure changes to your SMC regulators and filter/regulators. Clamp these covers over the regulator knob and secure them with a padlock.
    Overall
    For Mfr. Series
    For Max. Shackle
    Dia.
    For Max. No.
    of Padlocks
    Wd.
    Ht.
    Material
    Color
    Temp. Range,
    ° F
    Each
    AR20-D, AR20M-D, AW20-D, AWD20-D, AWM20-D5/16"12 1/8"1 1/4"PlasticWhite25 to 1409239N1100000
    AR30-D, AR30M-D, AW30-D, AWD30-D, AWM30-D5/16"12 5/8"1 3/8"PlasticWhite25 to 1409239N120000
    AR40-D, AR40M-D, AW40-D, AWD40-D, AWM40-D5/16"12 7/8"1 3/4"PlasticWhite25 to 1409239N130000
    AR50-D, AR50M-D, AR60-D, AR60M-D, AW50-D, AW60-D5/16"13 1/2"2 5/8"PlasticWhite25 to 1409239N1400000

    Tamper-Resistant Padlockable Covers for Parker Modular Compressed Air Regulators

    Image of ProductInUse. Shown Installed (Padlock Not Included). Front orientation. Compressed Air Regulator Locks. Tamper-Resistant Padlockable Covers for Parker Modular Compressed Air Regulators.
    Image of Product. Front orientation. Compressed Air Regulator Locks. Tamper-Resistant Padlockable Covers for Parker Modular Compressed Air Regulators.

    Shown Installed (Padlock

    Not Included)

    Lock these covers over your regulator knob to prevent unwanted pressure changes. They work with any Parker regulating component in the P31 or P32 series. Secure with a padlock.
    Overall
    For Mfr.
    Series
    For Max. Shackle
    Dia.
    For Max. No.
    of Padlocks
    Dia.
    Ht.
    Material
    Color
    Temp. Range,
    ° F
    Each
    P313/16"41 1/2"1 7/8"PlasticYellow/Black-4 to 1508367N11000000
    P325/16"42 3/8"2 5/8"PlasticYellow/Black-4 to 1508367N1200000
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