diff --git a/code/__DEFINES/atmospherics/atmos_piping.dm b/code/__DEFINES/atmospherics/atmos_piping.dm
index 3d864e6485f..bb5350ee17e 100644
--- a/code/__DEFINES/atmospherics/atmos_piping.dm
+++ b/code/__DEFINES/atmospherics/atmos_piping.dm
@@ -22,7 +22,13 @@
 #define MAX_OUTPUT_PRESSURE 4500
 /// (L/s) Maximum speed powered equipment can work at.
 #define MAX_TRANSFER_RATE 200
-/// How many percent of the contents that an overclocked volume pumps leak into the air
+/// (kPa) Minimum pressure volume pumps can move.
+#define VOLUME_PUMP_MINIMUM_OUTPUT_PRESSURE 0.01
+/// (kPa) What pressure volume pumps max out at.
+#define VOLUME_PUMP_MAX_OUTPUT_PRESSURE 9000
+/// (kPa) Allowed pressure difference between input and output pipenets for overclocked volume pump.
+#define VOLUME_PUMP_OVERPRESSURE_ALLOWANCE 1000
+/// How many percent of the contents that an overclocked volume pumps leak into the air.
 #define VOLUME_PUMP_LEAK_AMOUNT 0.1
 //used for device_type vars
 #define UNARY 1
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm b/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
index 31183a8eb51..1170ea32bde 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
@@ -1,7 +1,7 @@
-// Every cycle, the pump uses the air in air_in to try and make air_out the perfect pressure.
+// Every cycle, the pump uses the air in air_in to try and move a specific volume of gas into air_out.
 //
-// node1, air1, network1 correspond to input
-// node2, air2, network2 correspond to output
+// node1, air1, network1 corresponds to input
+// node2, air2, network2 corresponds to output
 //
 // Thus, the two variables affect pump operation are set in New():
 //   air1.volume
@@ -72,10 +72,10 @@
 	var/input_starting_pressure = air1.return_pressure()
 	var/output_starting_pressure = air2.return_pressure()
 
-	if((input_starting_pressure < 0.01) || ((output_starting_pressure > 9000)) && !overclocked)
+	if((input_starting_pressure < VOLUME_PUMP_MINIMUM_OUTPUT_PRESSURE) || ((output_starting_pressure > VOLUME_PUMP_MAX_OUTPUT_PRESSURE)) && !overclocked)
 		return
 
-	if(overclocked && (output_starting_pressure-input_starting_pressure > 1000))//Overclocked pumps can only force gas a certain amount.
+	if(overclocked && (output_starting_pressure-input_starting_pressure > VOLUME_PUMP_OVERPRESSURE_ALLOWANCE))//Overclocked pumps can only force gas a certain amount.
 		return