Rhode Island Precision Machining Company, 94-Year CNC & Hydraulic Valve Manufacturer

$5.2M

Revenue

$1.7M

SDE

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Full Editorial Writeup

This is a 94-year-old precision machining company based in Warwick, Rhode Island, running CNC and engineered-solutions work across HVAC, medical, hydraulic systems, gaming, and select marine and defense end markets. The business is positioned as a manufacturing partner rather than a commodity job shop, winning work that competitors cannot complete because of its reputation for delivery performance and low defect rates. It holds ISO-certified quality systems, employs 23 full-time staff, and shipped more than one million individual pieces in 2025.

Revenue topped $5.2 million with roughly 25% recent sales growth and margins approaching 40%, producing reported SDE of $1,714,414. That is a genuinely high-net operation for a shop this size, and the SDE margin near 33% of revenue is exceptional for the sector. A legacy hydraulic relief valve product line tied to military and other demanding applications adds a defensible, sticky revenue stream.

The asking price includes $2.12 million of inventory and more than 600 pieces of equipment appraised at $1.6 million via a third-party valuation. The owner holds the real estate separately (valued around $1.2 million, currently rented at $8,000 per month) and will sell it only alongside the business or offer a long-term market-rate lease. The seller is retiring and offers up to three years of transition support, which is unusually long and valuable for a technical manufacturing handoff.

Why we like it

Earnings quality is strong: $1.71 million SDE on $5.24 million revenue is a ~33% owner-earnings margin, with stated gross margins approaching 40% and ~25% recent sales growth. Selling over one million pieces annually across many customers reduces single-order concentration risk relative to a shop dependent on a few large jobs.
The moat is real for a machine shop: long-term customer relationships, ISO certification, low defect rates, and a reputation as the shop that takes the jobs others cannot finish. That problem-solver positioning lets it compete on capability instead of price, which is where most small shops bleed margin.
End markets are diversified and mostly non-discretionary: HVAC, medical, hydraulic systems, and defense components are all replacement and maintenance-driven demand that holds up in a downturn. The legacy hydraulic relief valve line tied to military applications adds a sticky, spec-locked revenue stream that is hard for competitors to displace.
Operator advantage is clear: a defense and aerospace push, plus basic website and information-flow upgrades, is low-hanging fruit for a buyer who can invest in business development. A 94-year-old shop with this profitability that has never run a real sales motion is a lever, not a liability.

How to improve it

Stand up a real business development function targeting defense and aerospace. The listing flags this directly as untapped, and these markets pay premium prices for qualified, ISO-certified suppliers with delivery track records, so even one or two new primes could move the needle materially.
Pursue AS9100 and ITAR registration if not already held. Aerospace and defense buyers gate suppliers on these certifications, and adding them converts the current defense dabbling into a formal, higher-margin qualified-vendor pipeline.
Rebuild the website and quoting process to speed information flow, which the seller cites as a bottleneck. Faster, cleaner RFQ turnaround wins more of the complex jobs competitors punt on, and those are exactly the high-margin problem-solver jobs this shop already wins.
Document the tribal knowledge before the seller and seasoned workforce turn over. With a 94-year history and specialized manufacturing know-how concentrated in a small team of 23, codifying setups, tolerances, and valve-manufacturing processes protects the moat and de-risks succession.
Analyze the product and customer mix to prune low-margin, price-competitive work and reallocate machine time to engineered, high-margin jobs. If margins approach 40% overall, there is likely a long tail of commodity work dragging capacity that could be repriced or dropped.
Invest selectively in additional CNC capacity given the noted room for growth in the facility. Demand appears to exceed the ability to say yes to every job, so adding a machine or shift where utilization is highest converts backlog into revenue.
Negotiate the real estate deal deliberately: either buy the building at the ~$1.2 million value to lock occupancy and capture rent as equity, or sign a long-term lease with a cap on escalation. Owner-controlled facility risk is a real diligence item since the seller will not sell operations without the property tie-in.

Diligence notes

Reconcile the $1.71 million SDE against tax returns and financials, and understand the add-backs. A 33% SDE margin is exceptional for machining, so confirm it is not inflated by one-time defense orders, owner labor being under-costed, or the seller performing key sales and engineering roles that a buyer would have to replace.
Test the durability of the ~25% growth and 40% margins. Determine whether recent growth is from a temporary surge in a few programs (gaming or a specific defense contract) versus broad-based demand, and whether margins hold as input and labor costs normalize.
Map customer concentration despite the million-piece volume. Ask for revenue by customer and by end market, and check how much of profit comes from the legacy hydraulic valve line and whether those contracts, tooling, and specifications are contractually secure and transferable.
Scrutinize the workforce and succession risk. With 23 employees and a seasoned team carrying specialized know-how, identify which individuals are irreplaceable, their ages and retirement risk, and whether the three-year seller transition truly covers the technical knowledge transfer.
Verify the equipment and inventory valuations independently. The $1.6 million equipment appraisal covers 600-plus items and $2.12 million of inventory is included, so confirm machine condition, remaining useful life, deferred maintenance, and that the inventory is current and sellable rather than obsolete stock.
Clarify the real estate structure and cost. The property is not in the asking price but the seller will only sell operations bundled with the building decision, and current rent of $8,000 per month should be benchmarked against market to model true occupancy cost post-close.

Source

Originally listed on BizBuySell. View original listing →