An air gap is a vertical, physical separation between the end of a water supply outlet and the flood-level rim of a receiving vessel.

FAQs Archive | Dallas Sprinkler System Installation and Sprinkler Repair

Q: Will you install a landscape if I don’t have plans?

We prefer to have plans to bid off of and to follow off on when we work. There are exceptions, and we can do a design-build based on the owner's thoughts and ideas or the look they are going for. We use this information to design the look you desire.

Q: Do you charge to give estimates on new installs?

No. We will meet, email, or call you and provide a professional bid for no cost for tree service, drainage systems, new sprinkler installations, or rain gutters.

Q: What is a double check valve assembly DCVA?

A DCVA is a mechanical Backflow preventer that consists of two independently acting, spring-loaded check valves. It includes shutoff valves at each end of the assembly and is equipped with test cocks. A DC is effective against back pressure Backflow and backsiphonage but should be used to isolate only non- health hazards.

Q: What is a reduced principle (RP) assembly?

An RP is a mechanical Backflow preventer that consists of two independently acting, spring-loaded check valves with a hydraulically operating, mechanically independent, spring-loaded pressure differential relief valve between the check valves and below the first check valve.

Q: What is a Backflow preventer?

A Backflow preventer is a means of mechanism to prevent Backflow. The basic means of preventing Backflow is an air gap, which either eliminates a cross-connection or provides a barrier to Backflow.

Q: How can I adjust my Rotors and Sprays?

Rotors are sprinkler heads that rotate from side to side as they operate and are generally used for large turf areas. Sprays are smaller sprinkler heads that are stationary when active and are generally used for flower beds and small turf areas. Rotors need to be adjusted using a special plastic key (Hunter brand) or small slotted screwdriver (RainBird brand). Instructions for RainBird rotary heads can be found at: http://www.rainbird.com/landscape/products/rotors/3500.htm

Sunlight, the air we breathe and the water we drink are all natural resources. Unlike the past, water has become a resource we pay for. Why is that?

Although water is provided by nature for free, because of [...]

By DallasLandscape|2025-07-29T17:00:53+00:00July 29th, 2025|General|Comments Off

Will you install a landscape if I don’t have plans?

We prefer to have plans to bid off of and [...]

By DallasLandscape|2025-07-29T16:58:21+00:00July 29th, 2025|General|Comments Off

Do you charge to give estimates on new installs?

No. We will meet, email, or call you and provide [...]

By DallasLandscape|2025-07-29T16:57:44+00:00July 29th, 2025|General|Comments Off

What is a double check valve assembly DCVA?

A DCVA is a mechanical Backflow preventer that consists of [...]

By DallasLandscape|2025-07-29T16:56:37+00:00July 29th, 2025|Backflow|Comments Off

What is an air gap?

An air gap is a vertical, physical separation between the [...]

By DallasLandscape|2025-07-29T16:56:11+00:00July 29th, 2025|Backflow|Comments Off

What is Backsiphonage?

Backsiphonage is a condition that causes a sub-atmospheric pressure to [...]

By DallasLandscape|2025-07-29T16:55:40+00:00July 29th, 2025|Backflow|Comments Off

What is a reduced principle (RP) assembly?

An RP is a mechanical Backflow preventer that consists of [...]

By DallasLandscape|2025-07-29T16:55:08+00:00July 29th, 2025|Backflow|Comments Off

What is a Backflow preventer?

A Backflow preventer is a means of mechanism to prevent [...]

By DallasLandscape|2025-07-29T16:54:41+00:00July 29th, 2025|Backflow|Comments Off

Why do I need my “Backflow Prevention Assembly” tested annually?

Backflow Prevention Assemblies and Devices break or wear out in [...]

By DallasLandscape|2025-07-29T16:54:14+00:00July 29th, 2025|Backflow|Comments Off

How can I adjust my Rotors and Sprays?

Rotors are sprinkler heads that rotate from side to side [...]

By DallasLandscape|2025-07-29T16:53:29+00:00July 29th, 2025|Sprinkler Repair|Comments Off