Male Socket 110×4″ DADEX PPRc

Description

Male Socket 110×4″

 

DADEX , PPRc, Food graded Male Socket 110×4″ pn 25 for HVAC and hot and cold water supply  Manufacturer Distributor contact 0322-3540656

 

What is Male Socket 110×4″ DADEX PPRc ?

 

This fitting is a heavy‑duty transition piece used to connect a large 110 mm PPRc line to a 4″ male threaded connection in high‑pressure hot and cold water or HVAC systems. It combines a PPRc socket end with a metal threaded insert, rated for PN 25 (25 bar at 20 °C).

What the fitting is

• A PPRc male socket / male adaptor: one side is a PPRc socket for fusion‑welding to a 110 mm PPRc pipe, the other side is a 4″ external (male) thread, usually brass or plated steel insert overmoulded in PPRc.

• From the designation:

  • 110 = nominal outside diameter of PPRc pipe side (110 mm).

  • 4″ = nominal thread size on the metal side (4″ BSP, usually).

  • PN 25 = nominal pressure class for the fitting (25 bar at 20 °C), suitable for high‑pressure risers, pump rooms and plantrooms in HVAC, and hot/cold water distribution.

Typical description and applications

• Used as a transition fitting between:

  • PPRc Polydex PN 20/25 mains and steel / brass manifolds, valves, pumps, strainers, water meters, PRVs, and equipment with 4″ female threads.

• Common applications in building services:

  • Main risers and headers for domestic hot and cold water in high‑rise buildings.

  • Chilled water and heating water branches where PPRc is used for HVAC distribution.

  • Plantroom connections to calorifiers, plate heat exchangers, booster pumps, and storage tanks with threaded nozzles.

• Suitable media:

  • Potable cold and hot water.

  • Closed‑loop HVAC water with standard corrosion inhibitor/biocide (check chemical compatibility with PPRc and brass).

  • Not suitable for steam or hydrocarbon oils.

Key specifications (engineering view)

Exact catalogue data varies by manufacturer, but for a Dadex‑type PPRc PN 25 male socket 110 × 4″ you can generally assume:

• Material:

  • Body: Polypropylene random copolymer (PPRc), green, to DIN 8078 / DIN 16962 class.

  • Insert: brass or brass alloy threaded insert, factory overmoulded.

• Dimensions (typical ranges, to verify against datasheet):

  • PPRc socket ID sized for SDR/series used with PN 20/25 110 mm pipe.

  • Thread: 4″ BSPT/BSPP male; thread length sufficient for full engagement in a 4″ female fitting.

• Pressure / temperature:

  • Nominal pressure PN 25 at 20 °C water.

  • For hot water, allowable working pressure decreases with temperature; for example, at 70–80 °C you typically design around 8–10 bar depending on class curve.

  • Use for:

    • Domestic hot water up to 70–80 °C (depending on local code and manufacturer curve).

    • Chilled water down to ~5 °C with proper support and insulation.

• Standards / conformity:

  • Pipes to DIN 8077/8078 (dimensioning and pressure rating).

  • Fittings to DIN 16962 (PPRc fittings).

  • System usually certified for potable use (NSF, KTW, etc., depending on region).

For a real project submittal, always lift the exact dimensions, wall thickness, weight and derating curves from the latest Dadex/Polydex catalogue and include them in the datasheet.

Installation guidelines

For this fitting to perform correctly in HVAC and hot/cold water service, treat it as a fusion‑welded plastic joint on one side and a conventional threaded metal joint on the other:

• Preparation of PPRc side:

  • Cut 110 mm pipe square with a pipe cutter or fine‑tooth saw.

  • Chamfer and deburr the pipe OD/ID to the manufacturer’s recommended angle.

  • Clean pipe and socket with a lint‑free cloth; remove dust, oil and moisture.

• Fusion welding (socket fusion):

  • Use an approved PPRc fusion machine with the correct 110 mm dies.

  • Heat tool to the recommended plate temperature (typically around 260 °C; confirm with Dadex literature).

  • Mark insertion depth on pipe (per table in catalogue).

• Threaded side installation:

  • Ensure matching 4″ female thread (BSP) on valve, union, header, or equipment.

  • Use suitable thread sealant:

  • Tightening:

    • Use a wrench only on the metal hex/flat or the reinforced part of the fitting; never grip or torque via the PPRc body alone.

    • Do not over‑tighten; follow torque guidance where available and rely on full thread engagement and sealant rather than excessive force.

• Support and alignment:

  • Ensure the steel/valve side is independently supported so its weight does not hang on the PPRc fitting.

  • Avoid misalignment and bending; male socket should see pure axial load and internal pressure, no significant moments.

  • Provide pipe clamps and guides as per PPRc manufacturer’s spacing table for 110 mm pipe (shorter spacing for hot water due to creep).

Usage in HVAC and plumbing design

When using this 110 × 4″ PN 25 male socket in your designs:

• Pressure / temperature selection:

  • Choose PN 25 fittings mainly for:

    • High‑pressure cold‑water mains and booster discharge headers.

    • Hot‑water risers in high‑rise, especially near pump rooms where pressures can be high.

    • Primary/secondary headers where HVAC design pressure is >10 bar.

• Transition strategy:

  • Use this fitting where PPRc mains transition to:

    • Steel manifolds and distribution headers.

    • Factory‑flanged or threaded equipment connections (e.g., pumps, calorifiers).

  • For high‑load locations (pump suction/discharge, large valves) consider using a short steel spool with flanged connection and keep the PPRc connection slightly away from the equipment to reduce vibration and mechanical stress.

• Thermal and mechanical considerations:

  • Commissioning:

    • Do not pressure test with water above the maximum recommended test pressure or temperature; follow PPRc manufacturer’s pressure‑test procedure (usually cold water test at 1.5× design pressure with defined duration and pressure drop criteria).