FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * SMITH KENNETH WALTER   2. Issuer Name and Ticker or Trading Symbol CIRCOR INTERNATIONAL INC [CIR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr. VP, CFO & Treasurer (Last) (First) (Middle) % CIRCOR INTERNATIONAL, INC., 25 CORPORATE DRIVE, SUITE 130 3. Date of Earliest Transaction (Month/Day/Year) 08/31/2007 (Street) BURLINGTON, MA 01803 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 08/31/2007   M(1)   9,020 A $ 13.9 15,035 D   Common Stock 08/31/2007   S(1)   9,020 D $ 42.32 6,015 D   Common Stock 08/31/2007   M(3)   6,900 A $ 23.8 12,915 D   Common Stock 08/31/2007   S(3)   6,900 D $ 42.31 6,015 D   Common Stock 08/31/2007   M(5)   3,280 A $ 24.9 9,295 D   Common Stock 08/31/2007   S(5)   3,280 D $ 42.31 6,015 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option Right to Buy

$ 13.9

08/31/2007

M(1)(2)

9,020

(2)

10/23/2012

Common Stock

9,020

(2)

5,000

D

Stock Option Right to Buy

$ 23.8

08/31/2007

M(3)(4)

6,900

(4)

01/06/2014

Common Stock

6,900

(4)

4,600

D

Stock Option Right to Buy

$ 24.9

08/31/2007

M(5)(6)

3,280

(6)

02/18/2015

Common Stock

3,280

(6)

10,920

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SMITH KENNETH WALTER % CIRCOR INTERNATIONAL, INC. 25 CORPORATE DRIVE, SUITE 130 BURLINGTON, MA 01803			Sr. VP, CFO & Treasurer

Signatures

Alan J. Glass, Attorney-in-fact		09/04/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The stock options exercised herein reflect the cashless exercise of a portion of the grant of 25,000 options by the issuer to the reporting person on 10/23/2002 and scheduled to expire on 10/23/2012.
(2)	The 25,000 options granted on 10/23/2002 vested in increments of 20% per year over a 5-year period. Upon exercise, the underlying options convert into shares of the issuer's common stock on a one-for-one basis.
(3)	The stock options exercised herein reflect the cashless exercise of a portion of the grant of 11,500 options by the issuer to the reporting person on 1/6/2004 and scheduled to expire on 1/6/2014.
(4)	The 11,500 options granted on 1/6/2004 vested in increments of 20% per year over a 5-year period. Upon exercise, the underlying options convert into shares of the issuer's common stock on a one-for-one basis.
(5)	The stock options exercised herein reflect the cashless exercise of a portion of the grant of 14,200 options by the issuer to the reporting person on 2/18/2005 and scheduled to expire on 2/18/2015.
(6)	The 14,200 options granted on 2/18/2005 vested in increments of 20% per year over a 5-year period. Upon exercise, the underlying options convert into shares of the issuer's common stock on a one-for-one basis.

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