# KEYSTONE INTERNATIONAL INC

KEYSTONE INTERNATIONAL INC is a company headquartered in Houston, TX, United States.

## Company overview

- **Legal name:** KEYSTONE INTERNATIONAL INC
- **Classification:** Company
- **Industry (SIC):** 3490 — Miscellaneous Fabricated Metal Products
- **Headquarters:** Houston, TX, United States
- **Incorporated in:** TX
- **Fiscal year end:** December 31
- **SEC CIK:** 0000055642

## About

KEYSTONE INTERNATIONAL INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0000055642, and its reported industry is Miscellaneous Fabricated Metal Products. The retained history contains 12 filings, including 10-Q filed on 1997-08-12. Each filing retains its accession, filing date and original SEC document link. This historical evidence does not establish current registration, listing, ownership or financial condition.

## Recent SEC filings

- Form 10-Q — filed 1997-08-12 — period 1997-06-27 — FORM 10-Q
- Form SC 13G — filed 1997-07-10 — KEYSTONE INTERNATIONAL, INC.
- Form 8-K — filed 1997-05-27 — period 1997-05-20 — KEYSTONE INTERNATIONAL, INC. - 05/20/97
- Form 10-Q — filed 1997-05-09 — period 1997-03-28 — FORM 10-Q
- Form SC 13G — filed 1997-04-30
- Form DEF 14A — filed 1997-04-04 — period 1997-05-07 — KEYSTONE INTERNATIONAL, INC. - 5/7/97
- Form 10-Q — filed 1996-11-13 — period 1996-09-30 — FORM 10-Q
- Form 10-Q — filed 1996-08-12 — period 1996-06-30 — FORM 10-Q
- Form 10-Q — filed 1996-05-14 — period 1996-03-31 — 1ST QUARTER FORM 10-Q
- Form DEF 14A — filed 1996-03-13 — period 1996-05-01 — KEYSTONE INTERNATIONAL, INC.
- Form 10-Q — filed 1995-11-09 — period 1995-09-30 — FORM 10-Q
- Form 10-Q — filed 1995-08-14 — period 1995-06-30

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Updated: 2026-10-23T22:19:15Z

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