As filed with the Securities and Exchange Commission on August 2, 2012

Registration No. 333-181253

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Amendment No. 5

To

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Tyco Flow Control International Ltd.

(Exact name of registrant as specified in its charter)

Freier Platz 10

CH-8200 Schaffhausen, Switzerland

41-52-633-02-44

(Address, including Zip Code, and Telephone Number, including Area Code, of Registrant’s Principal Executive Offices)

Judith A. Reinsdorf

Executive Vice President and General Counsel

Tyco International Management Company, LLC

9 Roszel Road

Princeton, New Jersey 08540

(609) 720-4200

(Name, Address, including Zip Code, and Telephone Number, including Area Code, of Agent for Service)

With a copy to:

Approximate date of commencement of the proposed sale of the securities to the public: As soon as practicable after this Registration Statement becomes effective and upon completion of the merger described in the enclosed prospectus.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box:  ¨

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act of 1933, as amended, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

CALCULATION OF REGISTRATION FEE

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the Registration Statement shall become effective on such dates as the Commission, acting pursuant to said Section 8(a), may determine.

EXPLANATORY NOTE

This Amendment No. 5 to the Tyco Flow Control International Ltd. Registration Statement on Form S-1 (Registration No. 333-181253) originally filed with the Securities and Exchange Commission on May 8, 2012, as amended by Amendment No. 1 filed June 19, 2012, Amendment No. 2 filed July 18, 2012, Amendment No. 3 filed July 26, 2012 and Amendment No. 4 filed July 30, 2012, is being filed for the purpose of filing a revised Exhibit 5.1 (and the related consent included therein as Exhibit 23.3), updating the Exhibit Index accordingly and updating Other Expenses of Issuance and Distribution. This Amendment No. 5 does not relate to the contents of the prospectus that forms a part of the Registration Statement and, accordingly, the prospectus has not been included herein.

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Other Expenses of Issuance and Distribution

The following table sets forth an itemization of all estimated expenses, all of which we will pay, in connection with the issuance and distribution of the securities to be registered:

Indemnification of directors and officers

Tyco Flow Control’s articles of association will provide that it will indemnify and hold harmless, to the fullest extent permitted by Swiss law, the existing and former members of the board of directors and officers from and against all costs, charges, losses, damages and expenses actually incurred in connection with any threatened, pending or completed actions, suits or proceedings—whether civil, criminal, administrative or investigative—by reason of the fact that such individual was a director or officer; provided, however, that this indemnity shall not extend to any matter in which any of said persons is found, in a final judgment or decree of a court or governmental or administrative authority of competent jurisdiction not subject to appeal, to have committed an intentional or grossly negligent breach of his statutory duties as a member of the board of directors or officer.

Tyco Flow Control will maintain insurance to reimburse Tyco Flow Control’s directors and officers and those of Tyco Flow Control’s subsidiaries for charges and expenses incurred by them for wrongful acts claimed against them by reason of their being or having been directors or officers of Tyco Flow Control or any of Tyco Flow Control’s subsidiaries.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers or persons controlling the registrant pursuant to the foregoing provisions, the registrant has been informed that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is therefore unenforceable.

Recent Sales of Unregistered Securities

Not applicable.

II-1

Exhibits and Financial Statement Schedules

The following Exhibits are filed as part of this Registration Statement unless otherwise indicated:

II-2

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

II-3

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, Tyco Flow Control International Ltd. has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Princeton, State of New Jersey, on August 2, 2012.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities indicated.

EXHIBIT INDEX