PP Lug Coupling
The PP Lug Coupling is a versatile and reliable coupling solution designed to meet the diverse needs of industries such as water treatment, chemical processing, and industrial applications.
PP Lug Coupling Supplier from China
The PP Lug Coupling is a lightweight polypropylene hose coupling that connects by twisting two lugs into matching slots, giving a secure, hand-tight connection without tools.
It is a low-cost, corrosion-proof alternative to metal couplings for water, liquid fertilizer and mild chemical transfer, and is especially popular in agriculture and irrigation.
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | PP Lug Coupling (Lug-Type Hose Coupling) |
| Material | Polypropylene (PP) with UV stabiliser |
| Size Range | 1/2" to 4" |
| Connection Style | Two-lug twist lock / bayonet |
| Working Pressure | Up to 7 bar (100 PSI) |
| Working Temperature | -10°C to +70°C |
| Gasket | NBR or EPDM |
| Colour | Black, blue or custom |
| Chemical Resistance | Good against fertilizers, most diluted acids and alkalis |
| MOQ | 500 pcs per size |
Key Features
- Lightweight and completely corrosion-proof — ideal for fertilizers and water.
- Tool-free twist lock connects and disconnects in seconds.
- Far lower cost than brass or stainless couplings for the same duty.
- UV-stabilised polypropylene for long outdoor service life.
- Smooth bore minimises flow restriction and pressure loss.
- Standard dimensions interchange with common lug-type hose systems.
Application Scenarios
- Agriculture: liquid fertilizer, pesticide and water transfer lines.
- Irrigation: portable sprinkler and drip feed supply hose.
- Water transfer: tank filling, garden and general wash-down water.
- Aquaculture: pond aeration and water circulation lines.
- Light chemical: diluted acids, alkalis and cleaning solutions.
Customization & OEM Service
ShengYa supplies polypropylene lug-type hose couplings to distributors, hose assemblers and OEM equipment builders worldwide. We support full customization:
- Size & specification: non-standard bore, band width or thread pitch built to your drawing.
- Material selection: carbon steel, stainless steel 304/316, brass, aluminium, PP or nylon to match the medium.
- Sealing & gasket: NBR, EPDM, Viton, PTFE or silicone gaskets for chemical, oil or food contact.
- Branding: laser-engraved logo, stamped part number, custom label and retail/wholesale packaging.
- Documentation: material certificate, dimensional report and pressure-test report on request.
Packaging & Delivery
Standard packing is polybag + inner box + export carton, or bulk-packed on request. Typical MOQ is 500 pcs per size for customized orders and 100 pcs for stocked sizes. Lead time is 7–15 days for stock and 20–30 days for customized production. Samples are available for evaluation before bulk order.
Frequently Asked Questions
What pressure can a PP lug coupling handle?
Typically up to 7 bar (100 PSI) at ambient temperature. Pressure rating drops as temperature rises, so avoid continuous hot-water service.
Is polypropylene suitable for fertilizers?
Yes. PP has excellent resistance to most liquid fertilizers and agricultural chemicals, which is why it is widely used in spraying equipment.
Can I mix PP couplings with metal couplings?
The lug locking pattern is specific to the lug system. We recommend mating like-for-like; contact us with your existing fitting's specification if you need to confirm compatibility.
Do you offer spare gaskets?
Yes, NBR and EPDM gaskets are stocked separately in all sizes, so worn seals can be replaced without buying a new coupling.
