Gravity Drop Male Coupler 4″ x 3″ with Sight Glass
SKU KMN-FUEL-0221
A 4 inch x 3 inch aluminium gravity drop male coupler with a built-in sight glass, so you can see fuel moving during tanker offloading anywhere in South Africa.
R1 346,63
- Integrated sight glass shows flow while the tanker discharges
- 4 inch x 3 inch male coupler in aluminium
- For gravity offloading of road tankers
- Shipping weight 2.7 kg
Delivered by our own trucks in 1 to 3 days. R550 / R950 / R1,450 by order weight. FREE on orders of R20,000 or more with code KH027. Delivery details
Specifications
| Type | Gravity drop male coupler with sight glass |
|---|---|
| Size | 4 inch x 3 inch |
| Material | Aluminium |
| Connection size | 4 inch x 3 inch |
| Max pressure | On request (gravity use) |
| Display type | Integrated sight glass |
| Net weight | 2.6 kg |
| Shipping weight | 2.7 kg |
| Dimensions | 220 × 220 × 180 mm |
Description
Overview
This gravity drop male coupler has a sight glass built into the body, so you can see fuel moving through the connection while a road tanker offloads. It is a 4 inch x 3 inch coupler in aluminium. The glass lets the driver confirm that product is flowing, and spot air in the line or a blocked outlet without disconnecting anything. That small window saves time on every delivery and helps catch problems before a tank runs short. At 2.6 kg net it is heavier than the plain male coupler because of the glass section.
Key features
- Integrated sight glass for visual flow checks
- 4 inch x 3 inch male gravity drop coupler
- Aluminium construction, body 220 x 220 x 180 mm
- Net weight 2.6 kg
- For gravity offloading, with the female half fitted at the tank
Where it works
Tanker fleets and depots choose the sight glass version where the driver needs to see what is happening at the connection: remote farm tanks in Limpopo and the Free State, mine fuel bays in Mpumalanga, and municipal depots in Gauteng and KZN. If you only need a plain connection, the 4 inch x 4 inch male coupler is lighter and cheaper. To add a separate inline window to a line, see the 4 inch sight glass. The wider selection is in our fuel station accessories category.
What’s in the box
- 1 aluminium gravity drop male coupler with sight glass, 4 inch x 3 inch
Delivery and warranty
Kamano delivers with its own trucks from Polokwane to all nine provinces in 1 to 3 days. Delivery is free on orders of R20,000 or more (VAT incl.). The shipping weight is 2.7 kg, so it ships in our lightest delivery band. Ask us for the warranty terms on this model.
Questions about this product
What is the sight glass on a gravity drop coupler for?
It lets you see fuel moving through the coupler while the tanker offloads. You can confirm that product is flowing and notice air or a stoppage without breaking the connection. It is a visual check only, so keep your normal dipping and delivery-note checks in place when the tank is filled.
Is the 4 inch x 3 inch size right for my tank?
The 4 inch x 3 inch size refers to the coupler and its second connection. Match it to your existing female coupler and thread before ordering. If you are unsure, send us a photo of the fittings on WhatsApp and we will confirm the correct model, including the 4 inch x 4 inch alternative.
What does delivery cost to the Karoo or Northern Cape?
At 2.7 kg this coupler sits in the first band: R550 for total orders up to 30 kg, whichever province it goes to. Orders from R20,000 VAT incl. are free. Our own trucks deliver from Polokwane in 1 to 3 days, and we will confirm timing to remote farms.
Nationwide delivery from Polokwane
Delivered to all nine provinces in 1 to 3 days
We deliver the Gravity Drop Male Coupler 4" x 3" with Sight Glass with our own trucks to Johannesburg, Pretoria, Cape Town, Durban, Gqeberha, Bloemfontein, Polokwane, Mbombela, East London, Kimberley, eMalahleni, Thohoyandou, Stellenbosch and Secunda, and to farms, mines and sites in between. This item ships in the R550 delivery band (up to 30 kg). Orders of R20,000 or more deliver free with code KH027.





