Compressed Air Regulator, Air Inlet Size 3/8 in, Air Inlet Type NPT, Maximum Flow Rate 25 cfm, Maximum Operating Pressure 300 psi, Maximum Operating Temperature 125 Degrees F, Pressure Gauge Included Yes, Adjustment Mechanism Knob, Overall Width 2 5/8 in, Adjustment Location Top, System Location Main Line, Series A-4000, Air Inlet Gender Female, Air Outlet Gender Female, Air Outlet Size 3/8 in, Air Outlet Type NPT, Body Material Plastic, For Fluid Type Air, For Substance Type Air
The Johnson Controls A-4000-138 Pressure Reducing Station features a wall mounting bracket for secure installation. The gauge measures pressure from 0 to 30 psig. An adjustable pressure knob allows for precise control. A pressure relief valve is factory set at 25 psig, but can be adjusted if needed. The station includes 3/8" O.D. compression elbow fittings on both high and low pressure sides for efficient connections.
Compressed Air Regulator, Air Inlet Size 3/8 in, Air Inlet Type NPT, Maximum Flow Rate 25 cfm, Maximum Operating Pressure 300 psi, Maximum Operating Temperature 125 Degrees F, Pressure Gauge Included Yes, Adjustment Mechanism Knob, Overall Width 2 5/8 in, Adjustment Location Top, System Location Main Line, Series A-4000, Air Inlet Gender Female, Air Outlet Gender Female, Air Outlet Size 3/8 in, Air Outlet Type NPT, Body Material Plastic, For Fluid Type Air, For Substance Type Air
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Distributor offers
| Seller | SKU | MOQ | In stock | Multiple | Prices |
|---|---|---|---|---|---|
| G5064096 | 1 | 40 | 1 | 1 @ $367.99 | |
| Grainger | 38Y087 | 1 | 1 | ||
| SupplyHouse | A-4000-138 | 1 | 1 | ||
![]() Radwell | A-4000-138 | 1 | 3 | 1 | 1 @ $320.00 |
| AH8QUA | 1 | 1 | 1 @ $637.49 | ||
![]() Zoro | G7031185 | 1 | 1 | 1 @ $393.27 | |
| h-mac.com | JOHNSON-CONTROLS-NU-A-4000-138 | 1 | 1 | ||
![]() Voomi Supply | A-4000-138 | 1 | 1 | 1 @ $387.72 | |
| sustainablesupply.com | C1679067 | 1 | -2 | 1 | 1 @ $309.56 |
| sustainablesupply.com | C2088314 | 1 | -2 | 1 | 1 @ $309.56 |
![]() simsupply.com | ZO-G5064096 | 1 | 1 | 1 @ $435.57 | |
![]() midwestapplianceparts.com | A-4000-138-JO-P | 1 | 1 | 1 @ $340.73 | |
![]() furnacepartsource.com | A-4000-138 | 1 | 1 | 1 @ $403.88 | |
![]() cappusa.com | 775300 | 1 | 1 | 1 | 1 @ $335.64 |
| Kele | A-4000-138 | 1 | 1 | 1 @ $566.28 | |
| A-4000-138 | 1 | 6 | 1 | 1 @ $346.60 | |
| hvacdiscountstore.com | JOH--A-4000-138 | 1 | 15 | 1 | 1 @ $318.08 |
![]() waterpumpsnow.com | A-4000-138 | 1 | 1 | ||
![]() homeessentialsdirect.com | A-4000-138 | 1 | 1 | 1 @ $224.54 | |
![]() Galco | A-4000-138-JHSN | 1 | 1 | 1 @ $433.64 | |
| A-4000-138 | 1 | Usually Ships 1-2 Weeks | 1 | 1 @ $410.34 | |
| JHCA4000138 | 1 | 1 | |||
![]() blackhawksupply.com | A-4000-138 | 1 | -2 | 1 | 1 @ $339.03 |
| alliedcontrols.com | A-4000-138 | 1 | Factory Stock | 1 | 1 @ $314.18 |
| A-4000-138 | 1 | -2 | 1 | 1 @ $141.93 |










