EXHIBIT 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Leslie Abi-Karam

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ Leslie Abi-Karam  

Leslie Abi-Karam 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Glynis A. Bryan

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ Glynis A. Bryan  

Glynis A. Bryan 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Jerry W. Burris

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ Jerry W. Burris  

Jerry W. Burris 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

T. Michael Glenn

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ T. Michael Glenn  

T. Michael Glenn 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Charles A. Haggerty

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ Charles A. Haggerty  

Charles A. Haggerty 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

David H. Y. Ho

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ David H. Y. Ho  

David H. Y. Ho 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

David A. Jones

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ David A. Jones  

David A. Jones 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Ronald L. Merriman

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ Ronald L. Merriman  

Ronald L. Merriman 

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

William T. Monahan

hereby constitute and appoint Randall J. Hogan, John L. Stauch and Louis L. Ainsworth, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Pentair, Inc. (the “Company”) to the Registration Statement on Form S-8 and any amendments (including post-effective amendments) or supplements thereto relating to the securities to be offered and sold pursuant to the Pentair, Inc. 2008 Omnibus Stock Incentive Plan, as amended and restated, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

     I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

          WITNESS my hand this 23rd day of February, 2010.

/s/ William T. Monahan  

William T. Monahan