How do you calculate valve body casting yield?

Divide accepted castings by total castings poured and multiply by 100. With 87 accepted out of 100 poured, the yield is 87%, which is 5 points below a 92% target.

What is a good casting yield for valve bodies?

It depends on alloy and complexity, but many sand-cast valve body lines target 90-95% inspection yield; investment or complex high-alloy bodies may sit lower. The 92% target in the example is a reasonable benchmark for carbon and low-alloy steel bodies.

Why is my casting yield below target?

The usual culprits are shrinkage and gas porosity, sand inclusions, misruns or cold shuts, and dimensional or wall-thickness rejects. An 87% actual against a 92% target signals a 5-point gap worth a Pareto by defect code.

Is casting yield the same as foundry metallic yield?

No. This calculator measures inspection acceptance yield (good bodies per poured body). Metallic or pour yield measures cast weight versus poured metal weight including gates and risers; both matter but answer different questions.

How does casting yield affect how many bodies I pour?

You must pour your order quantity divided by the yield. At 87% yield, shipping 100 good bodies requires pouring about 115; budgeting at 100% leaves you short and chasing a late re-pour.

How do I improve valve body casting yield?

Improve gating and riser design to control shrinkage, tighten sand and mold quality to cut inclusions, and control pour temperature and timing to avoid misruns. Track yield by defect code so you fix the dominant loss first.

Industrial Valves, Actuators & Flow Control calculator

Valve Body Casting Yield Calculator

Valve body casting yield is the share of poured valve bodies that pass inspection and move forward to machining, expressed as a percentage. Foundry supervisors and quality engineers in valve manufacturing track it to control scrap cost, since a rejected casting wastes melt, mold, and pour labor before any value is added. Yield drives material planning too: if only 87 of every 100 bodies are good, you must pour more than your order quantity to ship complete. Comparing the actual yield to a target exposes whether porosity, shrinkage, inclusions, or dimensional rejects are eroding margin on a casting line.

What this calculator does

Calculate valve body casting yield rate and gap to target from accepted castings vs. total castings poured, helping foundry and quality teams track performance and trigger corrective actions.
Use this when tracking foundry performance on valve body castings, reporting yield to management, or deciding whether a casting supplier needs a corrective action request.
It computes the casting yield rate as accepted castings divided by total poured times 100, and reports the gap in percentage points to your target yield.

Formula used

Casting yield rate = accepted castings / total castings poured x 100
Gap to target = casting yield rate - target yield

Inputs explained

Accepted valve body castings:
Total valve body castings poured:
Target casting yield:

How to use the result

Use it for shift or lot yield reporting, comparing pattern or alloy performance, and triggering a root-cause review when yield drops below target.
It is a simple acceptance ratio and does not weight castings by size or value, so a low yield on heavy high-alloy bodies costs far more than the same percentage on small carbon-steel bodies.

Current U.S. benchmarks

The U.S. has 21,668 machinery manufacturing establishments employing about 1,086,146 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate valve body casting yield? Divide accepted castings by total castings poured and multiply by 100. With 87 accepted out of 100 poured, the yield is 87%, which is 5 points below a 92% target.
What is a good casting yield for valve bodies? It depends on alloy and complexity, but many sand-cast valve body lines target 90-95% inspection yield; investment or complex high-alloy bodies may sit lower. The 92% target in the example is a reasonable benchmark for carbon and low-alloy steel bodies.
Why is my casting yield below target? The usual culprits are shrinkage and gas porosity, sand inclusions, misruns or cold shuts, and dimensional or wall-thickness rejects. An 87% actual against a 92% target signals a 5-point gap worth a Pareto by defect code.
Is casting yield the same as foundry metallic yield? No. This calculator measures inspection acceptance yield (good bodies per poured body). Metallic or pour yield measures cast weight versus poured metal weight including gates and risers; both matter but answer different questions.
How does casting yield affect how many bodies I pour? You must pour your order quantity divided by the yield. At 87% yield, shipping 100 good bodies requires pouring about 115; budgeting at 100% leaves you short and chasing a late re-pour.

Last reviewed 2026-05-12.