Atlas Copco 1616711781 OFT H-11 Low Pressure Element

Description

The 1616711781 is the Atlas Copco OFT H-11 low pressure element, the compression stage that builds the low-pressure air in an oil-free tooth compressor. A tooth compressor makes oil-free air in two stages, and this element is the one that works on the low side.

Elements are ordered by part record rather than by shape, because compression elements of one platform can look close while doing different jobs.

What the 1616711781 OFT H-11 Element Is

The 1616711781 is the low-pressure element of the oil-free tooth compressor. The part is listed under the OFT H-11 designation and is identified in parts documentation by the same number. It is a single sealed compression element, it travels as one piece, and the item data puts it at 40 × 30 × 30 cm and 53 kg.

The ELEMENT LP T1 sits at the heart of the oil-free air path. Because the tooth compressor makes oil-free air, the 1616711781 works without oil in the compression chamber, and its condition decides the cleanliness of the air the machine delivers. The part is entered as one standing line in the spares list, and the line stays valid because the number itself is the current version of the part.

Designation and Part Record

The official listing names the part under the number 1616711781, with OFT H-11 as the model designation of the element. The rate group of the item places it in the oil-free tooth element family of the parts programme, alongside the other compression stages of the machine.

The product group code of the item is PCFA, and the part is built under the pack brand CO. Those codes are the internal reference of the parts programme, and they are repeated here only so the workshop can match the 1616711781 to the record it already holds. The element itself is the same physical component whether it is read by code or by name.

The Role of the Low Pressure Element

An oil-free tooth compressor reaches its final pressure in two steps, and the low-pressure step is the one the 1616711781 performs. The air enters the machine, the low-pressure element (the air end of the tooth stage) compresses it part of the way, and the high-pressure element takes the air from there to the working pressure.

How the Stage Fits the Machine

The 1616711781 is mounted as the low-pressure half of the element pair, opposite the high-pressure element that completes the stage. The two elements share the same housing family and the same drive arrangement, and they are renewed as separate components when their service life ends. A tooth compressor that runs with both elements current delivers oil-free air at the specification the machine was built for, and the low stage is where that specification begins.

The element works without lubrication inside the compression chamber, which keeps the air oil-free from the first stage. The 1616711781 holds that condition on the low side, and its seal and geometry decide how much air the machine moves and how clean that air stays.

Confirmed Machine Applications

The 1616711781 is documented for the Atlas Copco ZT oil-free tooth compressor platform as a standard low-pressure stage. The confirmed models are listed below, each a machine the part is built around rather than a visual match.

ZT15, ZT18 and ZT22

The element serves the ZT15, the ZT18 and the ZT22, the core models of the oil-free tooth range. These machines use the 1616711781 as the low-pressure stage in their standard build, and the part number is the same across the three sizes.

ZT15-10A and ZT22 VSD

The 1616711781 is also the low-pressure element for the ZT15-10A, a documented variant of the ZT15 build. On the variable-speed side, the element is confirmed for the ZT22 VSD, where the low stage works under the same part number while the drive adjusts the machine output. For both variants the 1616711781 is the current low-pressure element, and the machine record is the place to confirm the fitment before the order is placed.

The High Pressure Counterpart

The low-pressure element does not work alone, and the 1616711781 is the low half of a defined pair. The high-pressure element that completes the stage is the 1616710781, the part listed as the ELEMENT HP T0 in the same parts programme. The two numbers belong to the same compression set, and a planned renewal often looks at both.

When a plan renews the low stage, the high stage is checked in the same window, because the two elements share the duty of the oil-free air path. The 1616711781 and the 1616710781 are ordered as two separate lines, and the machine record shows which a given position needs.

Why the Pair Matters

A tooth compressor that runs with one element current and one element aged loses the balance the machine was designed for. Renewing the 1616711781 while the high stage is still sound restores the low side alone, and the machine returns to its normal air picture. Where both stages are due, the two elements are renewed together, and the compression set returns to the state the original build defined. Either way, the part number of each stage is the line the planner carries.

Part Number History and the Supersedes Line

The 1616711781 is the current version of a part that has moved through several numbers, and the history matters in two places: in the machine documentation and at the order desk. Older manuals and service records still carry the earlier numbers, and a planner who meets them should read them as the same low-pressure element under the current number.

The Supersedes Line

The 1616711781 supersedes the following part numbers: 1202814080, 1616570281, 1616547381 and 2989011800. That line is the whole history of the position, and it means the current number retires every earlier number from the spares list at once. Orders travel under 1616711781, and the parts system directs them there without conversion work on your side.

Nothing about the machine changes with the supersession. The low-pressure position and the installation stay what they are, and the service records simply gain a line: the 1616711781 replaces 1202814080, 1616570281, 1616547381 and 2989011800 for every future renewal. A plant that carries the old numbers can add the current number next to them, and all four records point at the same element.

The Service Part Number 1616711791

The 1616711781 also carries the service part number 1616711791, used in service documentation alongside the production record. Both numbers describe the same low-pressure element, and the order is confirmed under the production number while the service number stays in the workshop and service records. The two designations are entered together so the maintenance file reads the element the same way in every document.

Installation and Maintenance Notes

The 1616711781 arrives as one complete low-pressure element, so the renewal replaces the whole function in a single step. There is no rebuild kit to plan and no second visit to finish the job. The element is exchanged as a unit during a normal service window, and the machine returns to service with its low stage restored.

Signs the Low Stage Needs Attention

The low-pressure element works on every running hour, and it ages quietly, so its condition belongs on the inspection round rather than on the emergency list. Watch the air quality and the load behaviour of the machine: a drop in oil-free air output, a stage that works harder than it used to, or a machine that no longer reaches its normal operating picture are all reasons to inspect the low stage and plan the renewal with the 1616711781.

None of these signs is dramatic on its own, which is why the 1616711781 is a planned part. At 53 kg it is handled with a lifting aid rather than by hand, and the 40 × 30 × 30 cm box stores as a standing spare. A low stage left alone does not stay small forever, because the air quality of the whole machine passes through this element on every cycle.

Planning the Renewal

The 1616711781 is planned as a single-component exchange. The machine is stopped and made safe, the low-pressure element is removed and the new element is fitted in its place, and the machine returns to service with its oil-free air path restored.

Ordering the 1616711781 Through Seadweer

Elements are ordered by record rather than by look, because compression elements of a platform can share a housing size while doing different jobs. The ordering routine of the 1616711781 is built around that fact.

Machine Record Check

Send Seadweer your compressor model and serial number, and the team checks the machine record against the 1616711781 before the quotation is issued. If your paperwork still shows 1202814080, 1616570281, 1616547381, 2989011800 or 1616711791, the check resolves it in the same pass: those numbers and the current number describe the same low-pressure element, and the order is confirmed under the production record.

What the Quotation Confirms

The quotation repeats the item data of the 1616711781: the designation, the box figures and the complete single-element scope of the order. One confirmation covers the whole renewal, so the workshop can schedule the swap without waiting for a second item. The ELEMENT LP T1 is planned and shipped under the one number the order travels under.

Technical Specifications

The tables below collect the identification and physical data of the 1616711781 in one place, exactly as the item data and the official listing state them.

Part Identification

Dimensions and Weight

The figures above are the item data of the 1616711781 for handling and logistics reference. The two tables together are the data sheet of the element, and Seadweer repeats them with the quotation so the workshop knows what arrives before it arrives.

FAQ

What is the 1616711781?

The 1616711781 is the Atlas Copco OFT H-11 low pressure element, the low-pressure compression stage of the oil-free tooth compressor. The ELEMENT LP T1 builds the first stage of the oil-free air path, and it is the current version of the part.

Which machines use the 1616711781?

The element is documented for the ZT oil-free tooth platform: the ZT15, ZT15-10A, ZT18, ZT22 and ZT22 VSD. The machine record confirms the fitment, because the part is built around the model rather than matched by appearance.

What numbers does the 1616711781 replace?

It supersedes 1202814080, 1616570281, 1616547381 and 2989011800. Those are earlier numbers for the same low-pressure element, and the current number retires them from the spares list. Orders travel under 1616711781 with no conversion work on your side.

What is the service part number 1616711791?

The 1616711791 is the service part number of the same low-pressure element, used in service documentation alongside the production record 1616711781. Both describe one component, and the order is confirmed under the production number while the service number stays in the records.

What is the high pressure counterpart?

The high-pressure element that completes the stage is 1616710781, listed as the ELEMENT HP T0. The two elements form the compression set of the machine, and a planned renewal checks both while the low stage is open.

How do I order the 1616711781?

Send Seadweer your compressor model and serial number, and the team checks the machine record against 1616711781 before the quotation. If your paperwork shows an older number or 1616711791, the check resolves it in the same pass, and the order is confirmed under the current production record.

More Air Ends Available

Other Atlas Copco air end models are available upon request. Please check the table below or contact us for details.