HHS:PHS:FDA:CFSAN:OC:DCP:MSB
 
                                                5100 Paint Branch Parkway
                                                College Park, MD  20740-3835
 
                                                M-b-340
 
                                                September 8, 2003
 
 
TO:  		All Regional Food and Drug Directors
      Attn:  Regional Milk Specialists
 
FROM:  	Milk Safety Branch (HFS-626)
 
SUBJECT:    Tuchenhagen Varivent Mix-Proof Type M.O Valve
 
 
The Tuchenhagen Varivent Mix-Proof Type M.O Valve has been reviewed and found to
comply with the applicable provisions of the Grade "A" Pasteurized Milk
Ordinance (PMO) when used to separate cleaning product solution and milk and
milk products.
 
Compliance with the PMO is based upon construction, installation, and operation
as described in the manufacture's manual and attachments.
 
Tuchenhagen Varivent Mix-Proof Type M.O Valve is a single-bodied double seat
valve designed to comply with Item 15p. PROTECTION FROM CONTAMINATION, 15p.(B)
of the PMO. The valve may be used as part of a fail-safe system to separate milk
and milk products from tanks or circuits containing cleaning and/or sanitizing
solution.
 
The technical information that was reviewed, addressing the Tuchenhagen Varivent
Mix-Proof Type M.O Valve, constitutes the Tuchenhagen Engineering Design and
Technical Construction File.
 
 
For further information contact:
 
Tuchenhagen North America
1000 Riverside Street
Portland, ME 04103
Phone: (207) 979-9500
Fax: (207) 878-7914
 
 
 
 
FDA's review and acceptance of this Single-Bodied Double Seat Valve does not
constitute agency endorsement or approval.  Any representation on a label or in
printed literature citing or indicating "FDA Approved" is false and misleading.
 
Copies of this memorandum are enclosed for distribution to Regional Milk
Specialists, State Milk Regulatory Agencies and State Milk Sanitation Rating
Officers in your region. This memorandum will also be available on the FDA Web
site at http://www.cfsan.fda.gov at a later date and should be widely
distributed to representatives of the dairy industry and other interested
parties.
 
 
 
 
 
                                  Jonathan M. Gardner
                                  Sr. Milk Sanitation Officer
 
 
 
Attachments:
Literature (page 3)
Technical Data Sheets (page 4)
Regulatory Test Procedures (page 5)
Proximity Switches Adjustment Procedures (page 6)
 

Regulatory Test Procedures

 
 
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M-b-340	1	September 8, 2003