Description
upvc Pressure pipe 1-1/4″
Dadex Aquadex local Suppliers Distributor Manufacturer in Islamabad Pakistan ASTM uPvc pipes series contact 0322-3540656
What is Aquadex Dadex upvc Pressure pipe 1-1/4″ ?
Aquadex is the brand name for Dadex (a leading Pakistani manufacturer) uPVC (Un plasticized Polyvinyl Chloride) pressure pipes. These are rigid, high-quality pipes designed primarily for cold potable water supply, distribution, and related applications.
Description Aquadex Dadex upvc Pressure pipe 1-1/4″
- Material: Un plasticized Polyvinyl Chloride (uPVC/PVC-U) — a strong, durable, lead-free thermoplastic.
- Key Characteristics:
- Smooth inner bore for low friction and minimal flow loss.
- Corrosion-resistant, chemical-resistant (suitable for many aqueous solutions), and does not support microbial growth.
- Lightweight compared to metal pipes.
- Self-extinguishing and non-conductive to electricity.
- Non-toxic and safe for potable (drinking) water.
- Joint Types: Solvent cement (glued), Push-fit rubber ring (Z-joint), or mechanical.
- Colors: Typically gray or white.
These pipes are not designed for continuous hot water supply (uPVC softens above ~60°C and loses pressure rating significantly with heat). For hot and cold water systems, Dadex recommends their Polydex PPR (Polypropylene Random) pipes instead.
1-1/4″ (approx. 32–42 mm nominal) is a common size for branch lines, risers, or smaller distribution in residential/commercial plumbing and HVAC chilled water lines.
Main Applications / Usage
- Cold water supply and distribution (potable water mains, building plumbing).
- Chilled water lines for HVAC and refrigeration.
- Irrigation and agricultural water supply.
- Fire-ring mains (firefighting systems).
- Industrial pipelines for certain chemicals, slurries, or effluents (check chemical resistance chart).
- Cable ducting/conduits (non-pressure versions).
- Not recommended for hot water (use PPR for that) or high-temperature fluids.
Specifications (Typical for Dadex Aquadex uPVC)
- Standards: BS 3505:1986, PS 3051:2012 (Pakistan Standard, based on BS), BS EN 1452.
- Pressure Classes (at 20°C reference temperature):
- Class B: ~6 bar (low pressure).
- Class C: ~9 bar.
- Class D: ~12 bar.
- Class E: ~15 bar (common for higher pressure needs).
- Pressure Derating: Ratings drop with higher temperatures (e.g., significant reduction above 30–40°C). Always apply a safety factor (test at 1.5x working pressure).
- Sizes & Lengths: Available in ¾”, 1″, 1-1/4″, 1½”, 2″, etc., in 4m or 6m lengths.
- Dimensions (approximate for 1-1/4″ — confirm with latest catalog):
- Mean Outside Diameter: ~42.1–42.4 mm.
- Wall thickness varies by class (thicker for higher pressure, e.g., Class E around 3–4+ mm).
- Marking: Every meter includes brand, standard, size, pressure class, and manufacturing details.
Note: Exact dimensions and pressure ratings depend on the class (B/C/D/E). Refer to Dadex price lists or technical PDFs for precise tables.
Installation Guidelines
- Handling & Storage: Store on flat surface, avoid direct prolonged sunlight (cover if needed), stack properly (max height ~1–1.5m), and protect from damage.
- Trenching: Minimum cover ~900mm for mains. Trench width = OD + 300mm + supports. Use sand/gravel bedding in rocky or unstable soil.
- Jointing:
- Solvent Cement: Clean, chamfer, apply Dadex cement evenly, insert with ¼ turn, hold 20–30 seconds. Cure time: 4–24 hours before pressure.
- Rubber Ring (Z-Joint): Clean, lubricate spigot, push to reference mark without over-insertion.
- Laying: Align properly, backfill carefully with compaction around pipe. Anchor bends/tees.
- Testing: Pressure test at 1.5x working pressure after joints set.
- Tools: Use proper cutters, brushes, lubricants, and safety gear.
Professional installation is recommended for pressure systems to avoid leaks or bursts.
Advantages Summary
- Long service life (50+ years when properly installed).
- Low maintenance.
- Cost-effective and easy to transport/install.
- Excellent flow characteristics.
- Eco-friendly (recyclable material).
For the most accurate and up-to-date specifications, dimensions, pressure ratings, or chemical resistance data for the 1-1/4″ size, contact Dadex Pakistan directly or download their latest Aquadex brochure from dadex.com. Prices vary by class and location (check local distributors in Islamabad/Rawalpindi).





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