Plumbing

Plumbing supplies form the core structure of residential and commercial water distribution and waste drainage systems, keeping water moving safely through bathrooms, kitchens, and service areas. These components cover everything from distribution piping and shutoff valves to specialized bathroom plumbing fittings and heavy-duty kitchen plumbing fixtures. Selecting the right fixtures and connection types ensures proper flow rates, prevents costly leaks, and maintains compliance with local plumbing codes. Coburn Supply has a full range of residential & commercial plumbing supplies, including hard-to-find faucet parts, bathtub parts, and complete toilet replacements to keep service calls moving on schedule.

• Water Distribution and Pressure Control
  Copper, PEX, and brass piping manage incoming freshwater lines, while pressure-reducing valves keep household and building system lines within safe PSI limits.
• Waste and Vent Line Assemblies
  Schedule 40 PVC, ABS, and cast iron drain components remove wastewater, relying on matched directional fittings to maintain proper pitch and prevent siphonage.
• Service Parts for Fixture Maintenance
  Stem cartridges, aerators, flush valves, and wax rings allow quick service calls, extending the operational life of existing sinks, showers, and water closets.
• Heavy-Use Restroom Systems
  Sensor flushometers, carrier arms, and heavy-wall porcelain fixtures handle high foot traffic in public facilities without frequent mechanical breakdown.
• Kitchen and Utility Hookups
  Flexible stainless steel connectors, strainers, garbage disposal adapters, and shutoff valves simplify under-sink rough-ins and appliance hookups.

How It Works / Where to Use

Categorizing inventory by jobsite location simplifies specification for residential and commercial mechanical crews.

• Supply Line & Main Valves
  Ball valves, backflow preventers, pressure regulators, and main shutoff assemblies.
• Drain, Waste & Vent (DWV)
  PVC soil pipe, cleanout plugs, p-traps, and continuous waste tees.
• Lavatory & Shower Assembly
  Shower valves, pressure-balance cartridges, tub spouts, and pop-up drains.
• Kitchen & Service Sink Rough-In
  Basket strainers, angle stops, braided supply lines, and air gaps.

Key Field Specifications & Planning Steps

Checking site specs, pipe sizing, and local code mandates prevents material mismatches during system assembly.

• Pipe Diameters & Connection Methods
  Verify nominal pipe sizes and matching joint styles, such as sweat, press, crimp, or threaded connections, before ordering stock.
• Water Chemistry & Material Ratings
  Choose brass, copper, CPVC, or stainless steel materials based on municipal water acidity, mineral content, and hard water scale risks.
• Local Mechanical & Plumbing Codes
  Review state and municipal codes regarding backflow prevention standards, lead-free brass requirements, and minimum drain pipe sizes.
•  System Pressure & Flow Demands
  Calculate total fixture units and water velocity targets before selecting pressure regulators, shutoffs, or main supply manifolds.

Frequently Asked Questions 

What is included under plumbing supplies? 
This category covers pipe, fittings, valves, drains, and fixtures for both bathroom and kitchen plumbing, plus commercial plumbing supplies for larger jobs.

What's the difference between residential and commercial plumbing supplies? 
Residential plumbing supplies are sized for individual homes, while commercial plumbing supplies are stocked in the volumes and fixture types used on multi-unit buildings.

Does Coburn Supply carry parts for bathtub and toilet repairs? 
Yes, bathtub parts and toilet replacements are stocked individually for repair jobs that don't require a full fixture swap.

Are faucet parts sold separately from full faucet sets? 
Yes, faucet parts such as cartridges, aerators, and sprayers are available on their own, in addition to complete faucet units.