2 1/2"

The 2 1/2" Watts 007 double check assembly began production in 1989 and is still currently being produced. The 007 is an inline check design with a single access cover. The body is epoxy coated cast iron construction. Fully testable. Many valve options are available, flanged ball valves and flanged gate valves.

The 2 1/2" Watts 007 DCDA double check detector assembly began production in 1995 and is still currently being produced. The 007 is an inline check design with a single access cover. The body is epoxy coated cast iron construction. Fully testable. Several different bypass assemblies have been used. Many common bypass assemblies use 3/4" 007M1, 3/4" 007M2, or 1/2" 007. Many valve options are available, flanged ball valves and flanged gate valves.

The 2 1/2" 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.

The 2 1/2" Watts Series 709 Double Check Valve Assembly began production in 1973 and is still currently being produced. It was available in bronze or epoxy coated cast iron bodied. Usually blue in color. Two cover design. The 709 uses self contained bronze check assemblies. The seats are bronze and replacable. In 2010, A lead free version was introduced, designated with a "LF" prefix. In 2013, the regular leaded devices were discontinued, Lead Free version is the only 709 available. No special tools are required for servicing

The 2 1/2" Watts 757 Double Check Assembly began production in 2000 under the Hunter name. In 2002, Watts bought the rights to the device and began production as the 757 name. The body is made of stainless steel and uses a single sliding cover. The #2 test cock must be removed in order to slide the access cover. The check assemblies are a plastic cam check design using a self contained torsion spring. All 757 devices are lead free. No special tools are required for servicing.

The 2 1/2" Watts 757DCDA Double Check Detector Assembly began production in 2000 under the Hunter name. In 2002, Watts bought the rights to the device and began production as the 757DCDA name. The body is made of stainless steel and uses a single sliding cover. The #2 test cock must be removed in order to slide the access cover. The check assemblies are a plastic cam check design using a self contained torsion spring. The first two years, the bypass device was a 3/4" Flomatic DCVE. After 2002, the bypass was typically a 3/4" Watts 007M3. All 757 devices are lead free. No special tools are required for servicing.

The 2 1/2" Watts 774 Double Check Assembly was produced from 1998 and is still currently in production. The body is a single cover, stainless steel construction. The cover uses a victaulic style clamp. The check assemblies are self contained plastic cam style. The cam checks thread into the body. The cam checks are self contained and disc rubbers cannot be replaced. All 774 models are lead free. No special tools are required for servicing, but a handy cam check removal tool is available to assist in removal of checks.

The 2 1/2" Watts 774DCDA Double Check Detector Assembly was produced from 1998 and is still currently in production. The body is a single cover, stainless steel construction. The cover uses a victaulic style clamp. The check assemblies are self contained plastic cam style. The cam checks thread into the body. The cam checks are self contained and disc rubbers cannot be replaced. All 774 models are lead free. Bypass device would be a Watts 007M2 or 007M3. No special tools are required for servicing, but a handy cam check removal tool is available to assist in removal of checks.

The 2 1/2" Watts Series 009 Reduced Pressure Zone Assemblies are Watts "contractor grade" RPZ device. They began production in 1989 and still are being manufactured. The 009 features a one cover design and uses check modules that slide into the body and are held in place with a retainer. The relief valve assembly slides down between the retainer and is directly under the cover. The check modules and relief valve assembly come apart for service. The body was available in epoxy coated cast iron or bronze. A number of valve options were available. In 2013, the 2 1/2 - 3" bronze bodied devices were discontinued and all epoxy coated cast iron devices are only available in lead free version. No special tools are required for servicing 009 Series devices.

The 2 1/2" 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.

The 2 1/2" Watts 909 Series Reduced Pressure Zone Assemblies were manufactured from 1979 and are still currently in production. The 2 1/2" 909 is a cast iron bodied device with a bronze relief valve. It features two check covers and a seperate relief valve cover. Check valves are self contained and the relief valve is a stem type. In 2010, the LF909 was introduced to comply with the new "Lead Free" laws. All repair parts were converted to lead free in 2013. Lead free repair parts will fit both regular 909 and lead free LF909 models. All 909 models have replaceable seats and require no special tools for repair.

The 2 1/2" Watts 909RPDA Series Reduced Pressure Detector Assemblies were manufactured from 1990 and are still currently in production. The 2 1/2" 909RPDA is a cast iron bodied device with a bronze relief valve. It features two check covers and a seperate relief valve cover. Check valves are self contained and the relief valve is a stem type. In 2010, the LF909RPDA was introduced to comply with the new "Lead Free" laws. All repair parts were converted to lead free in 2013. Lead free repair parts will fit both regular 909RPDA and lead free LF909RPDA models. All 909RPDA models have replaceable seats and require no special tools for repair. The 909RPDA features a bypass assembly to meter water usage. The bypass backflow preventer was changed over the years and may be a 3/4" Watts 909, 3/4" Watts 009, or 3/4" 009M2. Please check the bypass device I.D. tag before ordering parts.

The 2 1/2" Watts 957 Reduced Pressure Zone (RPZ) began production in 2000 under the Hunter name. In 2002, Watts bought the rights off of Hunter and is still manufacturing the devices. The body is constructed of stainless steel. The 957 Series features a light weight design and short lay length. It is also offered in a number of configurations with many valve options. To access the check assemblies there is a stainless steel sleeve that will slide open. You must unthread the #3 test cock then slide the cover. The 957 uses two self contained cam checks that use a tri-link check mechanism. Numerous repair parts are available for the 957 series devices, including rubber parts and complete parts. The relief valve can be unthreaded from the body for ease of service. The 957 uses an extrnal relief valve sensing line. There are no special tools required for service.

The 2 1/2" Watts 957RPDA Reduced Pressure Detector Assembly (RPDA) began production in 2000 under the Hunter name. In 2002, Watts bought the rights off of Hunter and is still manufacturing the devices. The body is constructed of stainless steel. The 957RPDA features light weight design and short lay lengths. It is also offered in a number of configurations with many valve options. To access the check assemblies there is a stainless steel sleeve that will slide open. You must unthread the #3 test cock then slide the cover. The 957RPDA uses two self contained cam checks that use a tri-link check mechanism. Numerous repair parts are available for the 957RPDA series devices, including rubber parts and complete parts. The relief valve can be unthreaded from the body for ease of service. The 957RPDA uses an external relief valve sensing line. Numerous bypass devices were used over the years including Flomatic RPZE and Watts 919. There are no special tools required for service.

The 2 1/2" Watts 994 Series Reduced Pressure Zone (RPZ) backflow preventer began production in 1998 and is still currently in production. The body is contructed of stainless steel and uses a single victaulic coupler cover. The 994 utilizes plastic cam checks and a self contained stainless steel relief valve. The relief valve may be removed from the body by unthreading it, but use caution when doing so, as to not "squeeze" or warp the relief valve body. Check assemblies thread into the body. Although not necessary, a cam check removal tool is available to remove the check assemblies.

The 2 1/2" Watts 994RPDA Series Reduced Pressure Detector Assembly (RPDA) backflow preventer began production in 1991 and is still currently in production. The body is contructed of stainless steel and uses a single victaulic coupler cover. The 994RPDA utilizes plastic cam checks and a self contained stainless steel relief valve. The relief valve may be removed from the body by unthreading it, but use caution when doing so, as to not "squeeze" or warp the relief valve body. The cam checks thread into the body. Although not necessary, a cam check removal tool is available to remove the check assemblies for the 2 1/2 - 6" sizes. Bypass valves should be a 3/4" Watts 009-M3.