Backflow Prevention Services We Provide:

  • Annual Backflow Testing 

  • Backflow Testing

    • Other Terminology: Backflow Device Testing, Backflow Assembly Testing, Backflow Prevention Assembly, Backflow Preventer Testing, Backflow Prevention Testing, Backflow Valve Testing, Backflow Field Testing, Backflow Prevention Device Field Testing, etc. ​

  • Testing & Certification for New Installed Backflow Devices/Assemblies

  • Backflow Repair

  • Backflow Maintenance

  • Backflow Replacement

  • Backflow Prevention/Preventer Installation      


                     All of Orange County                               All of Los Angles County
                   All Ventura County 

Types of backflow devices/assemblies we service:

Reduced Pressure Principle (RP) (RPP)

Double Check Valve (DC) (DCDA)

Pressure Vacuum Breaker

Straightline Backflow Tests, Repairs, Replaces, & Installs Backflow Prevention Devices/Assemblies for:

  • Fire Service

  • Fire Sprinkler Systems​ 

  • Fire Hydrant

  • Meter Protection

  • Domestic Water Supply

  • Irrigation

  • Pool/Spa

  • Industrial Water Supply

  • Soda Fountains

  • Medical Equipment Protection

  • Restaurant Equipment Protection             

Plus Others Not Listed

Our technician is certified & licensed for Los Angeles County, Orange County, & ABPA - American Backflow Prevention Association with over 23 years of experience in the backflow industry.

Residential - Commercial - Industrial 

Licensed & Certified Los Angeles County Backflow Tester 

Licensed & Certified Orange County Backflow Tester

American Backflow Prevention Association Licensed & Certified

American Backflow Prevention Association Member

Contact us today at:

(424) 237-2173

Or click on this button

Los Angeles County Cities We Serve (plus others not listed): Arcadia, Artesia, Azusa, Baldwin Park, Bell, Bellflower, Beverly Hills, Burbank, Carson, Cerritos, Claremont, Commerce, Compton, Covina, Culver City, Downey, El Monte, El Segundo, Gardena, Glendale, Hawaiian Gardens, Harbor City, Hawthorne, Hermosa Beach, Hollywood, City of Industry, La Habra Heights, La Mirada, Lakewood, Lawndale, Lomita, Long Beach, Los Angeles, Lynwood, Malibu, Manhattan Beach, Montebello, Palos Verdes Estates, Paramount, Pasadena, Rancho Palos Verdes, Redondo Beach, Rolling Hills, Rolling Hills Estates, Rosemead, Santa Fe Springs, Santa Monica, Seal Beach, Sherman Oaks, Signal Hill, South El Monte, South Gate, Temple City, Torrance, Valencia, Vernon, Whittier

Orange County Cities We Serve (plus others not listed): Aliso Viejo, Anaheim, Brea, Buena Park, Costa Mesa, Cypress, Dana Point, Fountain Valley, Garden Grove, Huntington Beach, Irvine, La Habra, La Palma, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Los Alamitos, Mission Viejo, Newport Beach, Orange, Placentia, Ranch Santa Margarita, San Clemente, Santa Ana, Seal Beach, Stanton, Tustin, Villa Park, Westminster, Yorba Linda

Contractors State License # 1028209

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Straightline Backflow, Inc.

(424) 237-2173

1639 Armour Lane

Redondo Beach, CA  90278

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