Brass Straight Union Conical M/F
Shipping and Delivery
Shipping and Delivery
| Product Type | Delivery Method | Preparation Time | Transport Time | Delivery Time |
|---|---|---|---|---|
| All Parts | Pickup Point | 0 to 3 days | 3 to 6 days | 3 to 9 days |
| All Parts | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 90cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 200cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Assembled Products | Home Delivery & Pickup Point | 0 to 5 days | (see methods) | 3 to 11 days |
* Tubes longer than 90cm cannot be delivered to a pickup point
For confirmation of delivery times on specific items, please send us a message
Brass Straight Union Conical M/F
Straight union fitting M/F with conical seat in brass, providing a dismountable connection with metal-to-metal sealing. The conical seat ensures progressive contact and reliable sealing without gasket. Standard ISO 228-1 BSPP.
Description of the Straight Union Fitting M/F with Conical Seat in Brass
This conical seat union achieves sealing through metal-to-metal contact between two conical surfaces, without requiring a flat gasket. This technology provides durable sealing, even after numerous disassembly cycles.
The M/F configuration (one male side, one female side) with swivel nut allows easy disassembly. Recommended for installations where interventions are frequent or where flat gaskets may deteriorate (high temperature, vibrations).
Technical Specifications
| Material | Brass CW617N - 4MS |
| Colour | Golden brass |
| Nominal pressure | PN 16 bar |
| Thread standard | ISO 228-1 - BSPP Gas (parallel thread) |
| Sealing | By conical seat metal-to-metal (without gasket) |
| Shape | Hexagonal (wrench tightening) |
| Gender | Male (threaded) / Female (tapped) with swivel nut |
| Union type | Conical seat (metal/metal) |
| Gasket | Without gasket (conical seat) |
| Compatible fluids | Drinking water, glycol water, compatible fluids |
| Temperature | Depending on the type of sealing chosen |
| Application | Drinking water supply, general plumbing, HVAC |
Conditions of Use and Installation
- Service pressure : PN 16 bar
- Temperature : Depending on the type of sealing chosen
- Fluids : Drinking water, glycol water, compatible fluids
- Installation : Apply moderate tightening torque and choose suitable materials (risk of galvanic corrosion). Flats adapted to standard wrench sizes.
Certifications and Compliance
- Drinking water : Compliant with the French decree of 25 June 2020 relating to metallic materials and products intended for installations in contact with water intended for human consumption.
- 4MS : Compliant with 4MS requirements — Harmonisation of European certification rules for materials and products in contact with drinking water.
Applications and Installation Tips
Applications
- Domestic plumbing : connection of hot and cold water installations
- Industrial plumbing : PN 16 bar compliant installations
- Interior decoration : creation of light fixtures, shelves, towel rails in exposed brass
- DIY and creative projects : custom projects with threaded fittings
Installation tips
- Sealing is achieved by conical metal-to-metal seat — no gasket is required
- Tighten with an open-end wrench or adjustable wrench — do not use pliers to avoid marking the fitting
- Apply moderate tightening torque — over-tightening may damage the conical seat
Technical Drawing
Dimensions (mm)
All dimensions are expressed in millimetres (mm), unless otherwise stated.
| G | G (mm) | L | L1 | L2 | H1 | H2 |
|---|---|---|---|---|---|---|
| 3/8" | 12x17 | 39.7 | 10 | 8 | 21 | 24.8 |
| 1/2" | 15x21 | 44.9 | 10 | 8.5 | 25.3 | 30 |
| 3/4" | 20x27 | 52 | 11 | 9.5 | - | 36.9 |
| 1" | 26x34 | 57.9 | 13 | 10 | 36.8 | - |
| 1"1/4 | 33x42 | 69.3 | 16 | 14.5 | 47.8 | - |
Size Equivalences
This straight union is available in the following sizes. Use this table to find the equivalence between millimetres, inches and DN.
| Size (mm) | 12x17 | 15x21 | 20x27 | 26x34 | 33x42 |
|---|---|---|---|---|---|
| Inches | 3/8'' | 1/2'' | 3/4'' | 1'' | 1''1/4 |
| DN | DN10 | DN15 | DN20 | DN25 | DN32 |
| Outer tube dia. | 17 mm | 21 mm | 27 mm | 34 mm | 42 mm |
The appearance of the fitting may vary depending on the batch in stock (see photos). Contact us for confirmation.
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