upvc-socket-gm-local-2"-3"-4"-6"-1/2"

upvc Socket 4″ GM Local

Pressure upvc Fittings, local fittings jeddah, ASTM D-2665 standard, construction plumbing building materials distributor, dealer, suppliers in karachi pakistan

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Description

upvc Socket 4″

 

Coupling GM made in Pakistan ASTM uPvc Sch-40 Pressure Fittings, Drain sewer ventilation plumbing building materials distributor, 0322-3540656

 

What is upvc Socket 4″ GM Local ?

 

  • A “socket” fitting means a female-end fitting that other pipes do not screw into, but are inserted (or spigot-inserted) into.

  • “4″” refers to nominal diameter (approx. four inches) of the pipe system it connects to. For uPVC in Pakistan/region, this might correspond to an OD around ~114 mm. For example one manufacturer lists 4″ nominal size, OD 114.3 mm.

  • Material: uPVC = un plasticized Poly vinyl chloride. This is a rigid plastic pipe/fitting material widely used for drainage, sewerage, cold water systems, etc.

  • The brand “GM Local” or “GM-Fit” is mentioned in Pakistan as a local manufacturing range for uPVC pipes & fittings (available in sizes 1/2″ to 8″).

2. Typical specification / properties upvc Socket 4″ GM Local

Here are typical specification items you would check for a 4″ uPVC socket, including what you should ask/verify for the “GM Local” version:

Parameter Typical values / what to verify
Material uPVC (un-plasticised PVC) – rigid, smooth inner wall, chemically resistant. Eg catalogue shows specific gravity, tensile strength etc for uPVC.
Size / Diameter Nominal 4″. Outer diameter around 114.3 mm in some catalogues for 4″ uPVC.
End/Connection type Slip (socket) x Slip or Socket x Spigot (insert pipe into socket end)
Standard / Schedule / Rating Eg for another brand: Schedule 40, meeting ASTM D-2665 or ASTM D-2466 for uPVC fittings. For local GM brand you should check the relevant standard (BS/ASTM) mentioned.
Temperature / Pressure rating Example from one socket: Working Temp 0°C to +60°C, Max Working Pressure ~15 bar for 4″ equal socket. For drainage/sewer sockets pressure is less critical but check for the rating.
Colour & Finish Usually white or off-white for uPVC, smooth surface, clean inner bore.
Application / Usage Drainage, sewerage, cold water, ventilation systems depending on variant. Eg local GM pipe listing says “ideal plumbing materials for Drain, rain water, sewerage system and ventilation”

So for your “GM Local 4″ uPVC socket” you’d want to ask the supplier for the following: the standard it is made to, the wall thickness (or schedule), the diameter specs, the pressure/temperature rating, and whether it’s for drainage (non-pressure) or for pressure water service.

3. Description / what it does

  • The socket is used to join two pipes (or a pipe to a fitting) of 4″ nominal diameter in a straight line, maintaining the bore size. In effect the two ends of the socket accept insertion of the pipe ends, so you get a continuous bore.

  • For example one listing describes a socket coupler: “A UPVC socket coupling is a type of plumbing fitting used to connect two pieces of UPVC pipes together in a straight line. … The socket ends allow the pipes to slide into them easily. Solvent cement is applied to create a permanent bond.

  • Advantages of uPVC: lightweight, corrosion resistant, smooth internal surface (reduces friction/scaling), good chemical resistance, cost-effective for many plumbing applications.

  • Limitations: Not suitable for high temperature (hot water) unless designed for that; must be installed properly or else solvent joints may fail; must be supported properly underground etc.

4. Installation – how to install a 4″ uPVC socket (GM local)

Here is a general installation guide for a 4″ uPVC socket – you should always follow the manufacturer’s instructions for the particular product you buy or the local plumbing code.

Preparation

  1. Verify the socket size and matching pipe size (nominal 4″). Clean and inspect the socket and the pipe ends.

  2. Cut the pipe ends square (90° cut) and remove burrs / debris from inside and outside of pipe ends.

  3. Dry-fit the pipe into the socket to check fit, alignment, and that the socket depth is correct.

  4. Clean the outside of the pipe end and inside of the socket end with recommended cleaner/primer if required by the manufacturer.

Jointing (Solvent weld method)

  1. Apply the appropriate solvent cement (adhesive for uPVC) to both the outside of the pipe end and the inside of the socket as per manufacturer’s instructions.

  2. Insert the pipe into the socket quickly, rotate slightly (about a quarter turn) to spread the cement evenly, and push until the pipe bottom touches the stop in the socket.

  3. Maintain alignment and hold the joint for the required “set” time (often a few seconds) so it doesn’t push out.

  4. Wipe off excess cement and ensure the joint remains aligned and unsupported until the solvent gives full strength (curing time as per instructions).

  5. For drainage/sewer systems, check slope/gradient as required (for e.g., build up the correct fall if applicable).

  6. Provide support/clamps for the pipe system so that there is no undue stress on the joint or socket due to weight, soil shifting, temperature expansion, etc.

After installation

  1. Pressure/Leak test if required (for pressure systems) after curing. For drainage systems maybe a flood test.

  2. Backfill trenches (if underground) carefully, avoiding sharp stones pressing on socket/fitting; ensure proper bedding and compaction.

  3. Label or tag the line if necessary, ensure accessibility for cleaning or future maintenance.

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