Buyer guide
Introduction
Some plots are too open, and the crop too broadly sown, for a lateral at every row to be the practical plan. Buyers looking at rain gun irrigation are usually in that situation: a large open area, a field crop, fodder, or an orchard where dense drip lines are impractical. This page is the buying note for that choice. The only catalogue product name here is Rain Gun System. BLUSTAL is the brand of Blue Stallion Equipments (P) Ltd., Ludhiana, established in 2004. The company quality-management system is ISO 9001:2015 certified; that certificate describes the company system, not a product certificate. The supply network includes 250+ dealers and distributors, and BLUSTAL handles export supply to multiple countries. Throw, flow, nozzle and pressure are not printed. They are confirmed on enquiry. Share location, area and crop.
The gun is a large sprinkler fed from a pump and a main. It is chosen when one or a few positions should water an open block, instead of a dense network of small emitters. That sentence is a fit note, not a measured radius. How far the water goes, and how much water moves, depends on the nozzle, the pressure and the pump. Those three have to be matched together. This page will not invent any of the three, and it will not invent the area one gun will finish.
A quotation should say whether you are buying the Rain Gun System for a fixed main or for a gun that will be shifted, and it should say what pipe, filter and fittings are included. The pump may already exist. If it does, it is an input, not a slogan. If it does not, the pump is its own decision and should be named as open. Installation labour and freight are outside this page unless a quotation explicitly includes them.
What it is
Rain Gun System is the product. There is not a second model name on this page, and there is not a table of nozzles with sizes. Nozzles matter, because throw and flow change with the nozzle, and they also change with pressure and with the pump that supplies that pressure. Matching is the work. Publishing a single radius would pretend the match had already been done for every farm.
Read the installation as a set of positions on a main, or as one gun moved between positions. Both are common. They do not use the same quantity of pipe, and they do not ask the same thing of the operator. Say which you intend. A shifted gun needs a hose and a coupling plan. A fixed gun needs a riser and a spacing idea. Neither plan is given numerical spacing here.
Filtration and the mainline still belong in the conversation. A large sprinkler is not a reason to ignore sand. Ask for the filter and the pipe to be on the same list if you want them supplied. Diameters and mesh are confirmed, not printed. Valves that isolate a gun, or that protect a pump from being dead-headed, should be mentioned if you know you need them, and left open if you do not. A timed controller for switching between gun positions is a separate product; see the controller range if the layout needs automatic scheduling rather than a hand-turned valve.
This page does not describe frost performance, dust control or cooling duty. The subject is watering the crop. If your file uses the gun for another purpose, say so in words and do not expect a performance line to be copied from a different brochure. The match of nozzle, pressure and pump remains the constraint either way, and it is still not given as figures here.
Who it is for
The readers are growers with large open plots, fodder growers, field-crop farmers, orchard managers who have already decided that dense drip is impractical, contractors who install seasonal overhead sets, and dealers who stock the Rain Gun System for that demand. A dealer list and a farm list should not be blended. One is cartons for the counter. The other is a block with a pump.
Project buyers should send the plot as it is farmed: one rectangle, or several patches with paths and a pump house in the way. A sketch changes the number of positions even when no radius has been published. Contractors should say whether they will shift the gun or fix it. A rain gun irrigation brief that hides that choice cannot be checked.
Institutional papers sometimes ask for a coverage claim in metres. Decline to invent one for the form. Write that throw and flow depend on nozzle, pressure and pump, and that the match will be confirmed. A clerk would rather see an open line than a figure that was never measured on that pump. Export files should add destination and documents without adding a technical claim the domestic page does not make.
Applications
Large open plots
The usual brief is an open area where a dense drip grid would be a long run of lateral for the way the crop is grown. Share the area and the shape, including obstacles. Say where the pump sits, or where it could sit. The gun is then discussed as Rain Gun System, and the number of positions stays provisional until nozzle, pressure and pump are matched. Do not convert area into a gun count by a rule of thumb from another district.
Access for a shifted gun matters. A plot that looks open on a map can be cut by a drain or a standing crop that cannot be walked through. Say so. Fixed positions avoid that walk and spend more on pipe. The choice is operational. This page will not put an amount on that choice and will not assign a radius to justify it.
Field crops
Wheat, pulses, oilseeds, vegetables on a broad layout, and similar field crops are discussed when overhead watering of an open block is the method. The crop stage matters. A young stand and a tall stand do not present the same path for water or the same tolerance for droplet impact. Say the stage. The hardware name remains Rain Gun System. The agronomy note is yours to send.
If part of the farm is already on drip, keep that part out of this list. A rain gun irrigation enquiry that quietly includes a drip block will be read as one method and quoted wrongly. Name the blocks. The gun is for the open field portion you have already judged unsuitable for dense laterals.
Fodder
Fodder stands are a common reason to look at the gun. The area is often large, the surface is open, and a full drip grid is not how the farm wants to work the cutting cycle. Say the fodder crop and whether the gun must be moved before a cut. A hose that crosses a stand you are about to harvest is an operating problem, not a catalogue problem. Mention it.
Water source for fodder blocks is often a canal turn or a shared pump with a limited hour window. That window is part of the match, because flow and the hours available have to agree with the area. This page still does not state a flow. It asks you to send the window and the pump facts so the match can be made in the reply.
Orchards where dense drip is impractical
Some orchards, especially wide-spaced or newly planned blocks, are briefed on the gun because a dense drip network is impractical for that layout. Say the tree spacing and why drip was set aside. Overhead water on a tree is not the same as water at a dripper. If you need root-zone water, this is the wrong page. If you have chosen overhead for this orchard, send that decision clearly.
Do not add a frost duty to the orchard note. This page makes no frost-protection claim. Wind, slope and the location of the pump are relevant. A radius is not. Ask for the nozzle, the pressure and the pump to be matched, and ask for the reply to show that the match is still open if the pump data has not arrived.
How to choose
Match nozzle, pressure and pump together
Throw depends on the nozzle and on the pressure. Flow depends on the same pair, and the pump is what makes the pressure and the flow available at the gun rather than on a nameplate in the shed. Change one and the other two move. That is why a single published radius would not hold for every pump. Send the pump information you have. If you have a nozzle preference, say it is a preference and ask for it to be checked.
If no pump exists yet, say so and do not borrow a neighbour's figures. The reply can list Rain Gun System and mark the hydraulic match as open. Buying the gun and discovering the pump later is a common way to end with a duty the installation cannot support. Keep them in one conversation even when they are not one product line.
Decide fixed positions or a gun that moves
Fixed positions want a main, risers and a spacing idea confirmed after the throw is known. A moving gun wants hose, couplings and a labour note for who shifts it. Write one of those sentences in the enquiry. If you want both, because one block is fixed and another is shifted, split the blocks. The product name can stay Rain Gun System on both lines.
Spacing between fixed positions is not printed here, because it follows the matched throw, the overlap you are willing to accept, and the wind. Ask for spacing to be proposed only after the match, or send the spacing you must live with because of paths and ask whether the match can serve it. Either question is valid. A copied spacing from a different pump is not.
Keep dense drip as the other conversation
The gun is suited, in general, to large open plots, field crops, fodder and orchards where dense drip lines are impractical. Where the crop wants water at the plant and the rows are regular, drip is the other enquiry and should not be forced into this product name. A farm can use both, on different blocks, in different seasons. The paperwork should show the split. Use the drip, sprinkler and rain-gun comparison to describe which blocks need broad watering and which need root-zone delivery.
Filters, mainline pipe and fittings are still part of a gun installation. Ask for them if you need them supplied. Leave them off if they are already in the ground, and say what diameter is there. A rain gun irrigation list that says gun only, on a farm with no main, is not a complete installation list. Completeness is about the parts you are missing, not about adding claims.
Specifications and buyer checklist
Send the facts that let nozzle, pressure and pump be matched. Leave unknown hydraulics blank. A blank is better than a radius copied from a brochure this page does not repeat.
Ask the quotation to use the product name Rain Gun System only, and to state whether positions are fixed or shifted. Look for an open line where the throw and the flow will be confirmed. Reject a tidy number that nobody tied to your pump. Keep the block name on the file so a later nozzle change is discussed against the same installation.
- Location, area and crop, and a note that dense drip is not the plan for this block.
- Plot shape, obstacles, and where the pump is or could be.
- Field crop, fodder or orchard, in the words you use on the farm.
- Fixed positions or a gun that will be shifted, or a split by block.
- Any pump facts you trust, with no borrowed pressure figure.
- Whether a nozzle preference exists, marked as a preference.
- Whether pipe, filter and fittings are to be supplied or are already installed.
- Wind, slope and access notes that change how the gun can be operated.
- Who receives the goods, dealer or project, and the project name if there is one.
- Export destination and documents, if the shipment leaves India.
Frequently asked questions
What product name should the quotation use?
Rain Gun System. Do not add a model, a nozzle code or a radius that this page does not publish. If a tender form has a column for throw, write that throw is confirmed when the nozzle, the pressure and the pump are matched. That is the accurate cell. Inventing a metre value to fill the cell is how the wrong pump is later blamed on the gun.
Why is there no throw or flow figure?
Because both depend on the nozzle, the pressure and the pump, and those are not the same on every farm. A figure printed here would be an invention for the farms that do not match it. Send your hydraulic facts and ask for the match. Until those facts exist, the honest quotation names the gun and leaves the duty open. Area alone does not create a flow.
When should the enquiry move to drip instead?
When the crop is in regular rows and you want water at the plant through a dense lateral layout. The gun remains the relevant tool for large open plots, field crops, fodder and orchards where that dense layout is impractical. If you are unsure, send both descriptions and ask which blocks fall where. Do not let one product name cover two methods.
What should a contractor include beyond the gun?
The operating plan: fixed or shifted. The pump status. The mainline status. The filter status. Access for shifting, if shifting is the plan. A contractor who orders only the Rain Gun System and arrives to a site with no main and no filter has bought a component, not an installation. Say which of those surrounding parts are in scope.
Can the same gun serve two crops in a year?
Often the hardware can stay while the crop changes, but the match of nozzle, pressure and pump should be re-checked if the area, the hours of water or the position plan changes. Tell the enquiry that it is a two-crop year and name both crops. This page does not promise that one setting suits both. It also does not add a frost use between the crops.
Request a quotation
Send location, area and crop, and say whether the block is a large open plot, a field crop, fodder, or an orchard where dense drip lines are impractical. Ask for rain gun irrigation to be quoted as Rain Gun System, with nozzle, pressure and pump matched together and with no invented radius or flow. Say if positions are fixed or the gun will move.
Add pump notes, a sketch if you have one, and whether pipe and filtration are in scope. Dealers should send stocking quantities separately from project lists. Export shipments should add destination and documents. The useful reply names the product, lists the open hydraulic checks, and refuses a coverage figure that was never measured on your installation.
Share the project location, area and crop through the contact form so the Ludhiana team can discuss suitable products and supply requirements.