COMET APS71 DIAFRAM PUMP WITH 1 3/8" M SHAFT

The APS71 Comet diaphragm pump is a high-pressure pump designed for use in sprayers. This model features a 3-diaphragm configuration, a 1"3/8M - 1"3/8M through-shaft, and a foot-mounted design. To identify it correctly, you should also note its flow rate of 67 l/min at 540 rpm and its pressure of 50 bar—two critical values for a proper replacement.

A diaphragm pump designed to pressurize the sprayer

In a spray system, a diaphragm pump supplies the liquid and builds the pressure required for the system to operate. This family of pumps is commonly used when a steady supply to the system is needed on agricultural equipment.

The APS71 model is a high-pressure sprayer pump. Its full model number is useful for finding an equivalent replacement when the existing pump is worn out, leaking, or no longer delivers the expected flow rate. If your old pump has the same identification number, with the same shaft type and the same mounting configuration, you have a relevant basis for comparison.

Key specifications for the APS71 model

The key details for selecting this pump are as follows:

• Model: APS71
• Type: 3-diaphragm pump
• Shaft: 1"3/8M - 1"3/8M through-shaft
• Mounting: with feet
• Flow rate at 540 rpm: 67 l/min
• Pressure: 50 bar

These specifications allow you to compare the pump with your current equipment without limiting yourself to a single commercial model. The combination of flow rate, pressure, and drive type remains particularly useful when several pumps that appear similar are installed on the same machine.

Key points to check before replacing your pump

Before ordering, first check for the designation APS71 on the removed pump or on its nameplate. Next, verify the presence of a through-shaft with a 1"3/8M diameter on each end. This is important if your drive or installation configuration requires the pump to be mounted at both ends.

Foot-mounted installation is also a key selection criterion. A pump with the same flow rate but a different mounting configuration may require installation modifications. Finally, compare the specified flow rate at 540 rpm and the pressure of 50 bar with your sprayer’s requirements to ensure a consistent configuration.

Why These Flow Rate and Pressure Values Matter

The flow rate of 67 l/min indicates the pump’s capacity at 540 rpm, while the pressure of 50 bar specifies the expected pressure level for this model. Both pieces of information are useful for avoiding the need to replace your pump with a model that is too different from your current setup, whether in terms of circuit flow or the sprayer’s overall performance.

If you’re looking for this high-pressure diaphragm pump, be sure to note the combination of the APS71, the 1"3/8M – 1"3/8M shaft, the foot-mounted assembly, the flow rate, and the pressure. These are the most reliable criteria for identifying the correct model number before replacement.

Dimensions and Technical Specifications

• 3/8M
• 71 m

FAQ — Frequently Asked Questions

What does the designation APS71 on this diaphragm pump mean?

The designation APS71 identifies the pump model. To ensure you order the correct part number, first compare this marking with your existing pump, then check the 1" 3/8M shaft on both ends, the presence of the feet, and the specifications of 67 l/min at 540 rpm and 50 bar.

Is this pump suitable for a sprayer?

Yes, the source lists it as a sprayer pump. To confirm it’s the right replacement, make sure it’s a 3-diaphragm pump with a 1"3/8M through-shaft - 1"3/8M, and that the flow rate of 67 l/min at 540 rpm and the pressure of 50 bar match your setup.

What does the 1"3/8M - 1"3/8M through-shaft specification mean?

This indicates a through-shaft with the same 1"3/8M diameter on both ends. This is important if your system uses a drive mechanism or requires a specific in-line configuration. Before replacement, also check the mounting feet to ensure the pump remains in the same installation location.

Is the flow rate of 67 l/min at 540 rpm sufficient to identify this pump?

This is an important reference point, but it is not sufficient on its own. A reliable identification combines the APS71 model, the specified flow rate at 540 rpm, the pressure of 50 bar, the 3-diaphragm configuration, and the 1"3/8M through-shaft. This combination minimizes errors during replacement.

Original replacement part numbers and brand names are provided solely for comparison purposes. This does not imply that these are original parts.