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GET /v1/liquid

Liquid valve sizing

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/valveflow-api

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Code snippets

curl "https://api.oanor.com/valveflow-api/v1/liquid" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/valveflow-api/v1/liquid", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/valveflow-api/v1/liquid");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/valveflow-api/v1/liquid",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "cv": 8.17415,
        "kv": 7.07107,
        "mode": "solve_kv",
        "note": "Kv = Q/√(ΔP/SG). Required flow coefficient for the duty; pick a valve whose Kvs exceeds this.",
        "inputs": {
            "flow": 10,
            "pressure_drop": 2,
            "specific_gravity": 1
        }
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:25.892Z",
        "request_id": "1cfef2f8-0cb9-4ef3-8403-91bd67482c36"
    },
    "status": "ok",
    "message": "Liquid valve sizing",
    "success": true
}