The SLH-5G supersedes both the SLH-4G and the SLH-4U. No end-of-support date has been published.
The SLH-5G supersedes both the SLH-4G and the SLH-4U. Spare parts for the superseded generation remain available at present.
No end-of-support date has been published, and no mechanical seal replacement interval is published for the SLH-4G. Both questions are with the manufacturer's channel.
| Item | Detail |
|---|---|
| Pump | SLH 180 hygienic twin-screw |
| Principle | No metal-to-metal contact between the screws |
| SLH-4G capability | To approx. 177 °C; differential pressure to 362 psi; pumps CIP solution directly |
| Status | Superseded by the SLH-5G, which replaces both the 4G and the 4U |
Source: manufacturer product literature, twin-screw hygienic pump range.
The pump handles product and then handles the CIP solution that cleans it without a changeover, which is normally the reason it is specified. Supersession does not affect its performance in service.
Parts availability after supersession typically follows a sequence. Each stage is manageable if the plant knows which stage it has reached.
The position of a specific installation in this sequence is established by asking the manufacturer directly and recording the answer in writing.
The mechanical seal on an SLH twin-screw is a four-figure euro item. No replacement interval is published for it.
Where a part has no published interval, it receives no planned replacement. In practice the seal runs to failure on a hygienic duty, on a pump whose generation is superseded, in a plant where line downtime exceeds the value of the pump.
The contents of a full annual wear kit for the pump, and whether an H1 food-grade lubricant is specified for the gearbox and bearings in hygienic service, form part of the same enquiry.
The screws are perfect. The seal face is the part with no published interval.
| Figure | Value | Source |
|---|---|---|
| SLH-4G temperature | to approx. 177 °C | Manufacturer product literature |
| SLH-4G differential pressure | to 362 psi | Manufacturer product literature |
| Supersession | SLH-5G replaces both SLH-4G and SLH-4U | Manufacturer product literature |
| Mechanical seal interval | NOT PUBLISHED | No manufacturer figure located. |
| End-of-support date, 4G spares | NOT PUBLISHED | Enquiry submitted; awaiting response. |
No end-of-support date for SLH-4G spare parts has been published, and none has been located in any manufacturer document.
No mechanical seal replacement interval is published for the SLH-4G. Both questions are with the manufacturer's channel. Answers will be published on this page with the date they were given and the party who gave them.
It is superseded. The SLH-5G now replaces both the SLH-4G and the SLH-4U. Parts remain available, but no end-of-support date has been published.
No interval is published. In practice the seal is run to failure. Given the cost of the part and the duty, holding one seal set in stock is the normal precaution.
Approximately 177 °C and a differential pressure to 362 psi, with no metal-to-metal contact between the screws. It pumps CIP solution directly.
Parts: Process pumps · Seals & gaskets
Bilingual Arabic/English. Symptom index, published intervals, the elastomer question, and what one pump consumes in a year. Printable. Free. Ask and we will send it.