Description
upvc Union 3/4″ AGM
AGM imported from Saudi Arab ASTM uPvc Sch-40 Pressure Fittings, Drain sewer ventilation. Dealer online shop contact 0322-3540656
What is AGM upvc Union 3/4″ ?
AGM uPVC Union 3/4″ Sch.40 (imported from Saudi Arabia) covering what it is, typical description & materials, specs you can expect, installation best-practices, uses, and cautions. I looked up AGM’s product/catalog pages and standard Schedule-40 references so the technical bits below match common AGM / ASTM practice — I’ll cite the most important sources after each relevant section.
What it is — short
A 3/4″ uPVC union (Schedule 40) is a removable coupling that connects two lengths of 3/4″ SCH-40 uPVC pipe or a pipe to a fitting, enabling quick disconnection without cutting the pipe. These fittings are ideal for cold water supply lines, service connections, and plumbing runs where future disassembly is necessary.
description & materials AGM upvc Union 3/4″
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Material: Rigid uPVC (un plasticized PVC) compound formulated for pressure plumbing (AGM’s UPVC products follow ASTM PVC material & fittings practice).
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Color & finish: usually White/ white, molded finish, smooth internal bore.
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Seal: removable union uses an elastomeric gasket/O-ring seated between the two socket faces; union nut compresses the gasket to make the seal. Some unions are socket × socket with a nut; others may be socket × threaded — always confirm the exact SKU.
Key nominal dimensions (what “3/4″ SCH-40” means)
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Nominal size: 3/4″ Schedule 40.
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Outside diameter (pipe OD): 1.050 in (26.67 mm) — this is the standard OD for 3/4″ nominal PVC pipe (SCH-40).
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Typical wall thickness (SCH-40, 3/4″): ≈ 0.113 in (2.87 mm).
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(AGM provides fitting catalogs showing dimensional tables.)
Typical performance / ratings
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Working temperature: uPVC fittings are generally rated for a maximum temperature of approximately 60°C (140°F), as specified by AGM for their UPVC/CPVC product lines. Please verify the exact rating on the specific union datasheet.
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Pressure rating: The union’s pressure rating is linked to the Schedule 40 system and the manufacturer’s tested rating at a specific temperature. AGM pipes and fittings are generally available in the same pressure classes as SCH-40 systems. Be sure to check the AGM fitting datasheet for the union’s PN/bar rating. (Example: some AGM SCH-40 pipe listings show ~15 bar for certain sizes — use the exact AGM union datasheet to confirm the fitting rating.)
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Standards: AGM publishes fittings to ASTM/industrial piping standards for SCH-40 systems (e.g., ASTM D2466 for molded fittings; ASTM D1785 for pipes). Request the fitting’s test/cert documents when buying for critical systems.
Installation — step-by-step (best practice)
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Verify part & compatibility: confirm the AGM part is a 3/4″ SCH-40 union (socket × socket or socket × thread) and that its pressure/temperature rating suits your application. Also confirm whether the union gasket material is compatible with the fluid.
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Cut & prepare pipe: cut pipe square, remove burrs, chamfer the leading edge slightly and clean the outside of the pipe and the inside of the socket.
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Dry fit check: assemble union without solvent to check fit and alignment. Make sure faces meet evenly and the gasket seats properly.
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Gasket placement & lubrication: place the union gasket/O-ring on its seat.
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Assemble union nut: hand-thread the union nut until snug, then use a wrench to give the recommended final turns. Do not over-torque — over-tightening can deform the gasket or crack the plastic housing.
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Cure & pressure test: allow solvent cement to cure for the manufacturer-recommended time before pressure testing. Perform a hydrostatic leak test at the recommended test pressure.
Typical uses (where 3/4″ SCH-40 unions are used)
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These fittings are ideal for cold water supply lines, service connections, and plumbing runs where future disassembly is necessary.
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Connections to pumps, filters, meters, valves or instrument runs that may require periodic removal or maintenance.
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Low-temperature sewerage/drain branches in applications where pressure piping is used. Always confirm chemical compatibility for aggressive wastes.
Advantages & cautions
Advantages
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Quick disassembly for maintenance.
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Corrosion resistance (vs metal) and low weight.
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Manufactured to match SCH-40 piping dimensions for fast installation.
Cautions
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Temperature limit (~60°C) — do not use for continuous hot-water service above stated temperature.
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UV exposure will degrade uPVC — protect outdoor installations.
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Mechanical loads — unions are not designed to carry heavy cantilever or tensile loads; provide proper support.
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Seal / gasket compatibility — confirm gasket elastomer (EPDM, NBR, etc.) is chemically compatible with the conveyed fluid.
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Pressure rating confirmation — always check the exact AGM union datasheet for allowable working pressure at the planned operating temperature.
What to request from the AGM supplier before purchase
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Exact AGM part number / catalogue entry for the 3/4″ SCH-40 union. (AGM catalogs list fittings by nominal size.)
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Pressure rating / PN or psi at 20°C and at any elevated temperature of interest.
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Gasket/elastomer material (EPDM, NBR, etc.) and chemical compatibility sheet.
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Material / resin spec and test certificates (ASTM references, hydrostatic test results).
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Country of origin & batch/traceability (you mentioned Saudi Arabia — AGM is a KSA brand)
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