Rain gun Sprinklers

Our rain gun sprinklers for sale in Kenya specifications are of the new generation of high-volume, high-pressure rain gun sprinklers in Kenya. Our low-pressure rain gun sprinkler specification is 1” in diameter, with a throw of 12M in diameter

 

The larger ones; from 1-1/2″ throgh 2-1/2″ 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. The cost of a rain gun sprinkler system installation is comparable to that of a rain hose kit

Rain gun pipes are; PVC or HDPE or delivery lay flat pipes, whose use is described in detail below.

How Much Does A Sprinkler System Cost In Kenya?

Rain gun sprinkler prices

PY series plastic rain gun sprinklers from 1.5″ to 2.5″ inlets on display at Grekkon Limited’s Eldoret store

 

 

 

How much is flange rain gun?

This is Kes 35,000 for the 1-1/2″, and Kes 45,000 for the 2″

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

 

Types of Rain Gun Sprinklers In Kenya

How to use a rain gun; choice of crops to irrigate

• Horticulture. cabbage, spinach, kales, carrot, onion, garlic, strawberry, and pineapple
• Broad-acre 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
• Lawns

Are rain gun sprinklers good for irrigation?

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 RG sprinklers work best at a pressure rating of 30M to 40M head or 3 bars to 4 bars of pressure. When determining a suitable water pump to power these sprinklers, one must consider the water discharge rate and the pressure rating. The water pump must meet these specs.

When connecting say 2 RGs of 2″ each to a water pump, the water discharged by the pump will be 15 cubics per hour by 2 units so 30 cubics per hour. The water pump water discharge specs must meet this specification. This however does not factor in frictional losses, which are determined by the; pipe diameter, the total horizontal and vertical pumping distances

 

FAQs

A. How do you install a rain gun sprinkler?

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

 

E. How much area does a rain gun cover?

This depends on the inlet size, type of RG sprinkler, pressure rating and flow rate. The table below provides details

Type	Make	Inlet Diameter	Max Spray Diameter	Min Head (Pressure Rating)	Max Flow Rate
Flange (F)	Metallic (M)	2″	60M	40M	60M3/ Hr
F	M	1.5″	45M	40M	40M3/ Hr
PY 50	Metallic	2.5″	40M	30M	25M3/ Hr
PY 40	Metal	2″	35M	30M	17M3/ Hr
PY 30	Metallic	1.5″	30M	30M	8M3/ Hr
RM	Metal- Brass	1.5″	30M	30M	8M3/ Hr
Plastic	Plastic	1.5″	30M	25M	7M3/ Hr
RM	Metallic	1″	20M	30M	6.5M3/ Hr
Plastic (P)	Plastic- Hard Black	1″	12M	10M	3M3/ Hr
Plastic	P	3/4″	7.5M	10M	2M3/ Hr
None Metallic	Plastic	1/2″	5M	10M	1.5M3/ Hr

 

When procuring a rain gun sprinkler, it is important to understand this tabulated information so a to settle on the most appropriate type

F. How much horsepower (Hp) does a rain gun sprinkler need?

This depends on the  inlet size of your rain gun sprinkler, the larger it is, the greater the water discharged, and so the more horsepower required

1″ and 1.5″ from 8.5Hp

2″ and 2.5″ from 10Hp

G. What pressure is needed for a rain gun?

From a head of 30M or 3 bar

H. What is the difference between a sprinkler system and a rain gun?

A rain gun is large and covers a large area, thereby replacing several impact or pop up sprinklers

 

I. What size are rain guns?

1″, 1-1/2″, 2″ and 2-1/2″

J. What are the benefits of rain gun?

• It irrigates over a large swathe of farm land
• It irrigates over a short period of time due to its high water volume
• Chemicals and fertilisers can be aapplied via this sprinkler
• It is east to move about
• It is easy to assembly and disassemble

K. How much motor is required for a rain gun?

For electric pumps, motors from 2Hp will run these sprinklers depending on the size of the pump

L. What crops are irrigated by rain guns?

Vegetables, tree crops, lawns, pastures, and turf grass in sports arenas

 

How To Choose Rain Gun Sprinklers

1. Diameter of spray. The choice of diameter of spray is determined by the acreage under irrigation.  A grower with 10 acres will pick a larger diameter of spray than to a 1/4 acre farmer because s/he has a larger coverage.
2. Flow rate. The flow rate preference is a factor of the crop type because different crops have different needs. A livestock farmer will grow his grass pasture well with a lower flow rate than a vegetable horticulture farmer. This is because the vegetables require much more water than grass. Another contributing factor to flow rate is the amount of water present, both must be aligned to avoid drying up the water source
3. Pressure rating. This determines the water pump size to use with the sprinkler. The water pump’s head must be greater than the sprinkler’s to accommodate pressure losses during reticulation