Apollo Valves: Backflow Preventers

Model No. DC4S Series - Part No. 4S-100 Series

Easy-handling, low head loss top entry double check valve assemblies for fire sprinklers and irrigation systems. Body and cover: FDA approved epoxy coated ductile iron. Meets ASSE 1015, AWWA C-510, and CSA B64.5; IAPMO listed, UL Classified and FM Approved. USCFCCC& HR Approved. Fast in-line maintenance. Sizes from 2-1/2" to 10".


Model No. DC4SG Series - Part No. 4SG-100 Series



Double Check Valves in sizes 2 1/2" - 8". Light-weight, short lay length, low head loss, with individual access to the check valves. FDA-approved epoxycoated ductile iron. Available shut-offs: monitored butterfly valves with supervisory switch, OS&Y and NRS gate valves. Grooved body connections for ease of installation.


Model No. DC40 Series - Part No. 40-100 Series



Sizes 1/2" to 2": Bronze body double check valves with Celcon® poppets and stainless steel springs. Full USC-FCCC&HR, AWWA, ASSE, CSA approvals; and IAPMO listed. UL classified and FM approved models.


Model No. RP4D Series - Part No. 4D-200 Series



Defender reduced pressure principle backflow preventers with grooved butterfly shut-offs provide lead-free protection against back-pressure or backsiphonage in a minimum space. Patented stainless steel modular checks help reduce lay length and simplify maintenance. Maximum working pressure 175 psig; operating temperatures from 33 to 140°F. Sizes 2-1/2" to 10".


Model No. RP40 Series - Part No. 40-200 Series



Sizes 1/4" to 2": Bronze body reduced pressure valves with Celcon® poppets and stainless steel springs. USCFCCC& HR, ASSE, CSA approved, 3/4" to 2" are also AWWA, UL classified and IAPMO listed.


Model No. RP40 Series - Part No. 40-200 Series



Sizes 2-1/2" to 10": Fusion epoxy coated ductile iron body; 85-5-5-5 replacement seats and stainless steel springs. Full USCFCCC& HR, AWWA, ASSE, CSA, and FM approvals and IAPMO listed. UL classified.



Model No. DUC40 Series - Part No. 40-300 Series



Bronze dual check valves with Celcon® poppets and stainless steel springs; in-line repairable; wide range of inlet/outlet connection combinations available. ASSE and CSA approvals. Sizes: 1/2" to 1".


Model No. DUC4N Series - Part No. 4N-300 Series



New Apollo® Valve 4N-300 Series dual checks. Tested and certified ASSE and CSA, designed especially to meet the growing needs of water systems supplying new suburban residential communities and neighborhoods. Sizes 3/8" to 1": Bronze body valves with Noryl® and acetal components and stainless steel springs.


Model No. DCAP Series - Part No. 40-400 Series



Bronze body continuous pressure valves with Noryl® poppets and stainless steel springs. ASSE and CSA approvals. Sizes: 1/2" and 3/4".


Model No. PVB4V Series - Part No. 4V-500 Series



Pressure vacuum breaker protects irrigation systems from freeze damage. Designed with plastic float and integral relief valve for freeze resistance; Apollo® ball valves standard. Max. working pressure: 150 psig. Full USC-FCCC&HR, ASSE, and CSA approvals. Sizes 1/2" to 2".


Model No. SVB4W Series - Part No. 4W-500 Series



Spill-resistant pressure vacuum breaker (SVB) is designed to prevent contamination of potable water due to back-siphonage and is ideally suited for indoor and OEM applications supplied with continuous pressure where water discharge could cause problems. Full USC-FCCC&HR, ASSE, and CSA approvals. Sizes: 1/4" to 1/2" Noryl Body


Model No. DCDA4S Series - Part No. 4S-600 Series



Epoxy coated ductile iron model DCDA. Designed to provide double check protection against cross-connection of non-potable (non-hazardous) water into the safe drinking water system; and at the same time offers precise monitoring capability to detect leakage or unauthorized use of water from fire or automatic sprinkler systems. Sizes 2-1/2" to 10".


Model No. DCDA4SG Series - Part No. 4SG-600 Series



Double Check Detector Assembly in sizes 2 1/2" – 8". Light-weight with grooved body connections for ease of installation in fire or automatic sprinkler systems. Provides precise monitoring capability to detect leakage or unauthorized water usage. Available shut- offs: monitored butterfly valves with supervisory switch and resilient-seated gate valves.


Model No. RPDA40 Series - Part No. 40-700 Series



Protects against hazardous cross-connections. Detects unauthorized use of water in fire and sprinkler systems. Internal sensing passage. Working pressures to 175 psig; operating temperatures: 33°F to 140°F. Approved under ASSE 1047, FM, UL Classified, USC’s FCCC&HR. Sizes: 3" to 10".