PSC 4540

Overview

The Product Service Code (PSC) is a governmentwide taxonomy that classifies the goods and services the U.S. federal government buys, enabling consistent reporting and analysis in systems such as FPDS and SAM. The PSC structure and definitions are maintained in the PSC Manual on Acquisition.gov. ¹

PSC 4540 designates Waste Disposal Equipment within Product Group 45 (Plumbing, Heating, and Waste Disposal Equipment). The PSC Manual specifies that this class includes compactors, destructors, garbage disposals, incinerators, and septic tanks; agencies select this code when the predominant deliverable is equipment of these types. Contracting personnel should confirm that the requirement is for equipment (products), not services, before assigning this code. ²

See also on G2X:

• G2X — PSC 4630 (Sewage Treatment Equipment)
• G2X — PSC 4510 (Plumbing Fixtures and Accessories)

What this PSC covers

• Compactors for waste handling and volume reduction. ²
• Destructors (waste-destruction units) for solid waste. ²
• Garbage disposals for food and related waste. ²
• Incinerators for solid waste disposal. ²
• Septic tanks and related waste-storage units. ²

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	4510	Plumbing Fixtures and Accessories
PSC	4520	Space and Water Heating Equipment
PSC	4630	Sewage Treatment Equipment
PSC	4610	Water Purification Equipment

Acquisition notes

• Trade agreements applicability: DoD implements Trade Agreements Act coverage by Product Service Group; PSG 45 (which includes PSC 4540) is listed among covered groups when the action meets the threshold and no exception applies. Agencies should verify thresholds and exceptions in DFARS before applying coverage. ³
• FPDS coding principle: When multiple products are bought, select the PSC based on the predominant item; use PSC 4540 when waste‑disposal equipment (e.g., compactors or incinerators) is the primary deliverable. ²

Distinctions from adjacent PSCs

• PSC 4540 vs. PSC 4630: 4540 covers waste disposal equipment such as compactors and incinerators; 4630 covers sewage treatment equipment, a separate class under Group 46. ²
• PSC 4540 vs. PSC 4510: 4540 is for disposal equipment; 4510 covers plumbing fixtures and accessories (e.g., sinks, water closets, faucets). ²
• PSC 4540 vs. PSC 4520: 4540 addresses waste handling; 4520 covers space and water heating equipment (e.g., furnaces, water heaters with 100-gallon or less recovery). ²

Frequently asked questions

• How is PSC 4540 defined?
  The PSC Manual lists Waste Disposal Equipment and explicitly includes compactors, destructors, garbage disposals, incinerators, and septic tanks. Use this code when the principal deliverable is equipment in those categories. ²

• What is the difference between PSC 4540 and PSC 4630?
  4540 covers equipment for disposing of solid waste (e.g., compactors, incinerators). 4630 covers sewage treatment equipment and falls under Group 46 (Water Purification and Sewage Treatment Equipment), not Group 45. ²

• Are waste collection or disposal services coded under PSC 4540?
  No. 4540 is a product code in Section D (Product Codes). Service requirements are coded under Section C service PSCs according to the statement of work; select the code that reflects the predominant service. ²

• Does Trade Agreements Act coverage apply to PSC 4540?
  DoD’s DFARS lists Product Service Group 45 among groups covered by trade agreements when the acquisition meets the threshold and no exceptions apply. Confirm applicability based on the specific dollar value and any agency policies. ³

• Are exclusions or size/technology thresholds specified for PSC 4540?
  Not specified by official sources. ¹

Useful resources

• G2X — PSC 4540
• Acquisition.gov — PSC Manual landing page (current and archival PSC files). ¹
• PSC Manual (April 2025 edition) — official definitions and coding guidance. ²
• DFARS 225.401-70 — Trade Agreements coverage by Product Service Group (includes Group 45). ³

References

1. Product and Service Code Manual — Acquisition.gov: https://www.acquisition.gov/psc-manual
2. PSC Manual April 2025 (PDF) — Acquisition.gov: https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
3. DFARS 225.401-70 — End products subject to trade agreements (Product Service Group list): https://www.acquisition.gov/dfars/225.401-70-end-products-subject-trade-agreements