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The Watts 07F is an epoxy coated cast iron single check valve. Produced in sizes 4 - 10", the 07F is no longer in production and was replaced with the SS07F. Although discontinued, repair parts are still available.
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The Watts SS07F is a stainless steel single check valve. Produced in sizes 4 - 10", the SS07F is currently in production and replaced the older cast iron 07F.
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The 4" Watts 700 is a discontinued double check assembly that was in production from 1973-1985. The 700 was a bronze bodied, inline check design that was fully testable device. Limited repair parts are available for the Watts 700.
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The 4" Watts 770 Double Check Assembly was produced from 1993-1997. The body is a two cover, epoxy coated ductile iron construction. The check assemblies are stainless steel toggle linkage type. They use a vulcanized clapper plate. Check springs are contained when the cover is removed. Spring tension must be removed to repair the device. The device has replacable bronze seats, but a seat removal tool is required.
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The 4" Watts 770DCDA Double Check Detector Assembly was produced from 1993-1997. The body is a two cover, epoxy coated ductile iron construction. The check assemblies are stainless steel toggle linkage type. They use a vulcanized clapper plate. Check springs are contained when the cover is removed. Spring tension must be removed to repair the device. The device has replacable bronze seats, but a seat removal tool is required. The bypass device was a 3/4" Watts 007M1
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The 4" Watts 772 Double Check Assembly was produced from 1993-1997. Very similar to the 770, with exception to the shutoffs. The 772 uses a special sgutoff that are not standard. Two different sizes on the flanges make it unique. The body is a two cover, epoxy coated ductile iron construction. The check assemblies are stainless steel toggle linkage type. They use a vulcanized clapper plate. Check springs are contained when the cover is removed. Spring tension must be removed to repair the device. The device has replacable bronze seats, but a seat removal tool is required.
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The 4" Watts 772DCDA Double Check Detector Assembly was produced from 1993-1997. Very similar to the 770, with exception to the shutoffs. The 772 uses a special shutoff that are not standard. Two different sizes on the flanges make it unique. The body is a two cover, epoxy coated ductile iron construction. The check assemblies are stainless steel toggle linkage type. They use a vulcanized clapper plate. Check springs are contained when the cover is removed. Spring tension must be removed to repair the device. The device has replacable bronze seats, but a seat removal tool is required. The bypass device was a 3/4" Watts 007M1
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The 4" Watts 773 Double Check Assembly was produced from 1998-1999. Similar internal parts to the 709, the 773 was designed to be installed vertical. The body is a two cover, epoxy coated cast iron construction. The check assemblies are self contained bronze. The device has replacable bronze seats. No special tools are required for servicing.
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The 4" Watts 773DCDA Double Check Detector Assembly was produced from 1998-1999. Similar internal parts to the 709DCDA, the 773DCDA was designed to be installed vertical. The body is a two cover, epoxy coated cast iron construction. The check assemblies are self contained bronze. The device has replacable bronze seats. The bypass was equipped with 3/4" 007M2 or 3/4" 007M3. No special tools are required for servicing.
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The 4" Watts 775 Double Check Assembly was produced from 1998-2003. The body was made of stainless steel. Single cover with modular check assemblies. Check modules thread into body. No special tools are required for servicing.
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The 4" Watts 775DCDA Double Check Detector Assembly was produced from 2000-2003. The body was made of stainless steel. Single cover with modular check assemblies. Check modules thread into body. Bypass device shall be a 3/4" Watts 775 or 3/4" Watts 007M3. No special tools are required for servicing.
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The 4" Watts Series 900 Reduced Pressure Zone Assemblies was in production from 1970-1988. The 900 was an inline check design. The body is constructed of cast iron and is were made epoxy goated or galvanized. The check modules and relief valve assembly come apart for service. Special tools are recommended for servicing 900 Series devices.
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The 4" Watts 993 Reduced Pressure Zone (RPZ) was produced from 1998-1999. The body was constructed of fused epoxy coated cast iron. Designed for verticle installations. Check springs are contained when the cover is removed. Check seats are replacable. The relief valve assembly is constructed of bronze and threaded onto the body. An external sensing line is used. No special tools are required for servicing.
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The 4" Watts 993RPDA Reduced Pressure Detector Assembly (RPDA) was produced from 1998-1999. The body was constructed of fused epoxy coated cast iron. Designed for verticle installations. Check springs are contained when the cover is removed. Check seats are replacable. The relief valve assembly is constructed of bronze and threaded onto the body. An external sensing line is used. The bypass device shall be a 3/4" Watts 009M2 or 3/4" Watts 009M3. No special tools are required for servicing.
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The 4" Watts 995 Reduced Pressure Zone (RPZ) was produced from 1998-2003. The body was made of stainless steel and features a one cover design. Modular check assemblies thread into body. The relief valve sets directly below the cover and uses an external sensing line. No special tools are required for servicing.
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The 4" Watts 995RPDA Reduced Pressure Detector Assembly (RPDA) was produced from 1999-2003. The body was made of stainless steel and features a one cover design. Modular check assemblies thread into body. The relief valve sets directly below the cover and uses an external sensing line. Bypass device shall be a 3/4" Watts 995 or 3/4" Watts 009M3. No special tools are required for servicing.
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