Rain gun Sprinklers

Our rain gun sprinklers specifications are the best of the new generation of high-volume, high-pressure rain gun sprinklers in Kenya. Our low-pressure rain gun sprinkler is 1” in size. The larger ones require high pressure. Rain gun sprinkler irrigation cost is lower than a drip system at the point of installation. However, rain gun sprinklers are more expensive to run than a drip irrigation system because they require a pump, while the latter will work with gravity flow. Rain gun pipes are; PVC or HDPE or delivery lay flat pipes, whose use is described in detail below.

Types of rain gun sprinklers

Our rain gun sprinkler types are;

  1. PY series. PY 30, PY 40, and PY 50
  2. Plastic
  3. RM
  4. Flange rain gun

Grekkon Limited introduced a new model of the rain-gun sprinkler to the Kenyan market; the double nozzle steel and brass Rain-gun series. These Rain gun specifications are; 2 nozzles, a main top nozzle of 16mm, and a small underneath nozzle of 8mm. The purpose of the small nozzle is to eliminate any “water shadow’’ areas or sections within the irrigated farm that remain dry.

Rain gun sprinklers prices

  • 1’’. Irrigation diameter 20M. Water discharge volume 4-5 cubic per hour. A booster pump for this rain gun will work

    Kes 6,500

  • 1.5’’. Irrigation diameter 30M to 45M. Water discharge volume 7-8 cubic per hour
Rain gun Type   Price in KES
Plastic   KES 5,000
PY 30 metallic   KES 13,500
RM metallic   KES 15,000
Flange metallic   KES 35,000

 

2’’. Irrigation diameter 40M to 60M. Water discharge volume 14-15 cubic per hour

Rain gun Type   Price in KES
PY metallic   KES 14,500
RM metallic   KES 17,000
Flange metallic   KES 60,000

2.5’’. Irrigation diameter 50M. Water discharge volume 23-25 cubic per hour

  • Kes 16,000 for the PY 5o rain gun

Rain gun acreage installation cost. The cost of a sprinkler system in Kenya is from Kes 55,000 an acre. It varies with the types of rain guns and size

 

How to use a rain gun; choice of crops to irrigate with the rain gun irrigation system

  • Horticulture. cabbage, spinach, kales, carrot, onion, garlic, strawberry, and pineapple
  • Broadacre crops. wheat, barley, canola, sugarcane, and corn/ maize
  • Fruit orchards. citrus (orange, tangerine, and lemon), avocado, macadamia, papaya, guava, mango, tree tomato, and passion
  • Forestry. seedlings and mature trees
  • Pasture crop. lucerne, Rhode grass5, and all other pasture grass
  • Herbs. mint, lemongrass, geranium, tagete, and so on
  • Hedge plants. kei apple, bougainvillea, cypress

Crops that are easily susceptible to fungal infections as a result of dampness on their leaves such as tomatoes and peppers are better irrigated using the drip irrigation system method.

Our rain gun sprinklers work best at a pressure rating of 30M to 40M head or 3 bars to 4 bars of pressure. When determining a suitable pump to power the sprinklers, one must consider the water discharge rate and the pressure rating. The pump must meet these specs. When connecting say 2 rain gun sprinklers of 2″ each to a pump, the water discharged by the pump will be 15 cubics per hour by 2 units so 30 cubics per hour. The pump water discharge specs must meet this specification.

Rain gun Irrigation System Design FAQs

A. How do you install a rain gun?

  1. Lay the mainline which is connected to your high-pressure water pump
  2. Lay and connect the lateral or sub mainline to the mainline
  3. Connect the rain gun sprinkler to the sub mainline using a delivery lay flat pipe, an HDPE pipe or PVC pipe

B. How do you design a rain gun irrigation system design?

The input pipe will be; PVC, HDPE, PPR, or a delivery pipe. Since the sprinklers work under high pressure, each of these pipe’s pressure rating should be a PN8 at the minimum. Each rain-gun sprinkler has a 1M steel tripod stand for support. The sprinklers can be manually adjusted to spray at any angle from 10 degrees to 360 degrees.

C. Can I use a booster pump for the rain gun?

Booster pumps for water gun irrigation work well when drawing water from a tank. Use it with the 1″ rain gun.

D. How do I assemble a rain gun irrigation system?

i. Connect the rain gun head to the tripod stand
ii. Attach a PVC, HDPE, or delivery pipe to the rain gun sprinkler inlet at the base
iii. Adjust the water gun sprinkler to the desired angle of irrigation water delivery
iv. Start your irrigation water pump

 

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Comments (12)

  • Can french beans be irrigated by the double gun. Half acre will require how many pumps.

    George Muriuki
    Reply
    • Dear George,

      It is possible to do so but we advise against it because French beans are highly susceptible to blight and rust as a result of excess moisture on their leaves. Drip irrigation is the best for this crop.

      Best regards,

      Customer Service

      Reply
  • Just wanted to enquire can spinach be irrigated well by use of sprinklers

    Martin Kamau
    Reply
    • Hey Matin,

      Yes, it can. Over what area are you growing the spinach and what sprinkler system do you prefer?

      Best regards,

      Customer Service

      Reply
  • It work well I really admired it thank

    Domnic
    Reply
  • How many sprinklers will I need for 1/2 acre ? I have a well, can I use water from it ?…..which pump would you recommend to be used to draw water from the well and pump it to the sprinklers? Thanks

    Obodo Brightone
    Reply
    • Dear Obodo,

      One rain gun of 1-1/2″ is enough. A high-pressure diesel or petrol generator pump will suction water up to 7M from your well. So if the water level is deeper, then you’ll need a submersible pump to evacuate it to a storage unit from which a generator petrol/ diesel or electric surface pump will pump from

      Best regards,

      Customer Service

      Reply
  • Pingback:Raingun Sprinkler Irrigation in Kenya | Grekkon Limited

  • How can a rain gun be used to irrigate tall grown maize say tasseling and flowering stage height

    Lagani
    Reply
  • Can I use rain gun and petrol water pump to grow maize. Located in Nyahururu

    Jack
    Reply
    • Dear KJack,

      Thank you for your enquiry. Yes you can, depending on the size of the rain gun. For detailed information on this, visit our Nyahururu store where our team of technical advisors will assist yous sir.

      Best regards,

      Customer Service

      Reply

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