Evaluation guide for importers, distributors, farm operators and industrial buyers | FOISON Sprinkler

FOISON Sprinkler rain gun and sprinkler range displayed at the manufacturer show room in Xuzhou, Jiangsu Province, China.

Rain guns — also sold as sprinkler guns, impact guns, turbine guns or agriculture guns — are bought for one reason: reach. Coverage grows with the square of the throw distance, so the real-world gap between the shortest and the longest throw in a product family is much bigger than the metre figures suggest. That is why a ranking by coverage is more useful at the evaluation stage than a catalogue page: it shows which model to specify first, and which numbers actually move the decision.

All three models are produced by Xuzhou Foison Sprinkler Irrigation Equipment Co., Ltd, a sprinkler and irrigation equipment manufacturer founded in 2013 and located in Pei County Industry Area, Xuzhou City, Jiangsu Province, China. The company runs a 30,000 m² factory with 135 employees, produces about 200,000 units a year and exports roughly 70% of its output to the EU, Africa, Australia, New Zealand, South East Asia, Mid Asia, Mid East and South America. Its products are marketed under the FOISON Sprinkler brand, and the range is used for both farm irrigation and industrial spray and dust removal duty.

How This Ranking Was Built: Two Criteria, Three Tie-Breakers

Ranking rain guns by the word "best" produces marketing rather than a decision. This ranking uses two primary criteria taken from the published specifications, plus three tie-breakers for models that sit close together.

1. Maximum throw reach. The farthest distance the gun throws water inside its stated pressure band. This sets the maximum spacing possible between sprinklers, and therefore how many units, risers and connections a field or yard needs.
2. Pressure ceiling. The highest working pressure the gun is rated for. This defines the upper limit of the system the gun is designed to work in, which matters when a site already runs a high-pressure main.

Tie-breakers, applied when the two primary criteria are close or tied:

• Minimum throw — how much ground the gun still covers at the bottom of its pressure band.
• Starting pressure — the lowest pressure at which the gun operates inside its stated band.
• Connection and nozzle format — a 20 mm nozzle, a 14 mm nozzle and an 80 flange are not interchangeable plumbing, and the choice follows the mainline, not the marketing sheet.

The Three Rain Guns, Ranked

1. #1 — FOISON FSW80. Throw range 23–85.7 m; working pressure 0.2–0.9 MPa; 80 flange connection.
2. #2 — FOISON FSC50. Throw range 23–56 m; working pressure 0.15–0.7 MPa; a 14 mm nozzle delivers 9 m3/h and 23 m at 0.15 MPa.
3. #3 — FOISON FSN50. Throw range 26–53 m; working pressure 0.2–0.7 MPa; a 20 mm nozzle produces a 43 m throw diameter at 0.5 MPa.

Each position is explained below with the inclusion reason behind it — coverage, pressure tolerance, and whether the model leans agricultural or industrial.

#1 FSW80: The Widest Coverage and the Highest Pressure Ceiling

The FSW80 takes first place because it wins on both primary criteria at once, which is uncommon inside a single product family: it has the longest throw range of the three, up to 85.7 m, and the highest pressure ceiling, 0.9 MPa. Its connection is an 80 flange — the largest format in the group — which matches the gun to fixed mains and larger flow systems rather than to hose-fed portable setups.

For industrial work, the 0.9 MPa ceiling is the practical argument. Dust suppression and spray installations on stockpiles, haul roads and material handling areas typically run on fixed lines whose pressure can exceed the 0.7 MPa ceiling of the two 50-series guns. The FSW80 is the only model in this comparison that stays inside its stated working band on that kind of line. In agriculture, the same reach has a different value: fewer sprinklers and fewer risers are needed to cover a given area, which reduces hardware count and the labour required to install and maintain the system.

The trade-off sits at the bottom of its range. The FSW80 starts at 23 m and 0.2 MPa, so on a low-pressure system it does not automatically outperform the smaller models — it earns its first place only where the reach and the pressure ceiling can actually be used.

#2 FSC50: The Longest Reach in the 50 Series and the Lowest Starting Pressure

The FSC50 ranks second on maximum throw, at 56 m — three metres beyond the FSN50 — and it is the most pressure-tolerant model at the low end of the range, starting at 0.15 MPa. That combination is what earns it a distinct position rather than a shared one.

Its published nozzle reference point makes the behaviour at low pressure concrete: with a 14 mm nozzle, the FSC50 delivers 9 m3/h and a 23 m throw at 0.15 MPa. This is the only one of the three with a published flow and throw figure at its minimum pressure, and it tells a buyer something useful — the gun still produces a usable pattern on a modest pump, before any pressure has been added to the system.

That is why the FSC50 is the natural candidate for older or lower-head pumping setups, hose-fed and semi-fixed layouts, and mid-size fields where a 56 m reach is sufficient. Its limit is the opposite of the FSW80's: with a 0.7 MPa ceiling, it should not be placed on a main that runs above that figure, and it gives up 29.7 m of maximum reach to the FSW80.

#3 FSN50: The Longest Minimum Throw in the Range

The FSN50 places third on maximum reach, at 53 m, but it holds a record the other two do not: the longest minimum throw, 26 m. Both the FSW80 and the FSC50 start at 23 m. In other words, the FSN50 is the model whose worst case is the best of the three, and for buyers who cannot guarantee high pressure across a whole block, that floor matters as much as the ceiling.

Its published nozzle reference point shows the mid-range behaviour: a 20 mm nozzle produces a 43 m throw diameter at 0.5 MPa working pressure. A 20 mm nozzle is the largest nozzle format named in this comparison, which is consistent with the model's role as a balanced mid-to-large reach gun rather than a low-flow unit. Its working band of 0.2–0.7 MPa sits between the other two at the top and above the FSC50 at the bottom.

Read alongside the other two, the FSN50 is the compromise option: less maximum reach than the FSW80, less low-pressure tolerance than the FSC50, but the most consistent pattern across the middle of its pressure band.

Nozzle and connection formats decide compatibility: a 20 mm nozzle, a 14 mm nozzle and an 80 flange connection are not interchangeable across the three models.

Where Each Model Fits: Agricultural and Industrial Use Cases

Fixed sprinkler irrigation is generally the practical choice where a large open area has to be covered with simple operation and controlled cost. Inside greenhouses, smaller plastic sprinklers or micro spray pipe are usually the better match, while outdoor fields normally call for metal sprinklers. All three rain guns in this ranking belong to the outdoor, metal-body side of that split, and all three are specified for operation with an adequate water resource, a pump and hose, and are rated to work in ambient conditions up to 50 °C.

• FSW80 — large open fields and industrial spray or dust removal. Choose it when the site has reach to use (up to 85.7 m) and a main that can run up to 0.9 MPa. The 80 flange suits fixed pipework, not quick-move hose sets.
• FSC50 — lower-pressure and semi-fixed systems. Choose it when the available pressure is close to the floor of the range, from 0.15 MPa, and when 56 m of reach already covers the block spacing you need.
• FSN50 — balanced mid-to-large duty. Choose it when pressure varies across the site and you want the strongest guaranteed minimum coverage, 26 m, with up to 53 m at the top of the band.

The three ranked models sit at the high-reach end of the FOISON range. Buyers whose block spacing is already covered by less reach can look at the mid-range models in the same programme — the FS35 impact sprinkler (18–36 m, 0.2–0.6 MPa), the FS40 agriculture sprinkler (20–43 m, 0.15–0.5 MPa) and the FSW40 Pro turbine sprinkler (22–41 m, 0.2–0.5 MPa). Those figures come from the same published specification set, and all three mid-range models are listed within the scope of the company's ISO 9001 certification.

Fixed sprinkler irrigation on an open field: reach and pressure band decide how many units, risers and fittings a block needs.

Field experience with the same fixed-irrigation principle is documented on a vegetable farm in New Zealand, where a common customer used 500 units of FOISON FS35 impact sprinklers over two years. The fixed sprinkler irrigation covered a 150,000 m² vegetable farm, saving 55% of water and 60% of labour. The three models ranked above follow that same fixed layout logic, at noticeably greater reach.

Step-by-Step: How to Match a Rain Gun to Your Pump and Field

1. Measure working pressure at the outlet, not static pressure. Compare the reading with each model's band. Below roughly 0.2 MPa, the FSC50 (from 0.15 MPa) is the only one of the three rated to operate there. Above 0.7 MPa, the FSW80 (up to 0.9 MPa) is the only one that stays inside its band.
2. Check available flow and pick the nozzle. The nozzle, not the model name, sets flow and reach. Reference points from the published data: the FSC50 with a 14 mm nozzle delivers 9 m3/h and 23 m at 0.15 MPa; the FSN50 with a 20 mm nozzle produces a 43 m throw diameter at 0.5 MPa.
3. Convert throw into spacing. Treat the published throw range as the ceiling for spacing, and reduce it where wind, crop height or terrain interferes. Wider reach means fewer sprinklers, fewer risers and less pipe per hectare.
4. Confirm the connection before ordering. The FSW80 uses an 80 flange. For the FSN50 and the FSC50, verify the connection format and nozzle size against your mainline and pump curve rather than assuming they match another model's plumbing.
5. Check site conditions. Rain guns in this range are specified for operation with a sufficient water resource, a pump and hose, and are rated for ambient conditions up to 50 °C.
6. Validate before scaling. The minimum order quantity is 20 units, and every unit is 100% tested. Remote after-sales support is provided after delivery.
7. Plan the order around production. Production lead time is within 20 days, against a monthly capacity of 50,000 units.

Comparison Table: FSN50 vs FSC50 vs FSW80

Working pressure and throw range are the published figures for each model. Nozzle reference points are stated for the nozzle size shown and are not directly comparable across different nozzle sizes.

Manufacturing, Certification and Customization Behind the Range

The three models are produced under a certified quality management system. Xuzhou Foison Sprinkler Irrigation Equipment Co., Ltd holds ISO 9001 certification, certificate number 28725Q042R0S, issued by Zhongzheng Excellent Certificate Group Co., Ltd against the GB/T 19001-2016 idt ISO 9001:2015 standard, with the scope "Production of sprinkler irrigation equipment". The certificate was issued on 29 May 2025 and is valid until 28 May 2028.

ISO 9001 certificate number 28725Q042R0S, covering the production of sprinkler irrigation equipment, valid until 28 May 2028.

Customization is handled in house. The manufacturer provides OEM/ODM production services and ODM design and production services, with customization available on model, logo, function and shape. Products are developed by the company's own design team of 12 engineers, which is relevant to buyers who need a rain gun adapted to an existing system rather than taken straight from the catalogue.

Production line for sprinkler irrigation equipment: every unit is 100% tested before shipment, with a monthly capacity of 50,000 units.

Frequently Asked Questions

Is the FOISON rain gun range covered by a certified quality management system?

Yes. Xuzhou Foison Sprinkler Irrigation Equipment Co., Ltd holds ISO 9001 certification, certificate number 28725Q042R0S, issued by Zhongzheng Excellent Certificate Group Co., Ltd against the GB/T 19001-2016 idt ISO 9001:2015 standard. The certified scope is the production of sprinkler irrigation equipment. The certificate was issued on 29 May 2025 and expires on 28 May 2028. Mid-range models such as the FS35, FS40 and FSW40 Pro are also listed within this certification scope.

Can the FSN50, FSC50 and FSW80 be customized for an OEM or ODM project?

Yes. The manufacturer provides OEM/ODM production services and ODM design and production services, and offers customization on model, logo, function and shape. Product design is handled by an in-house team of 12 engineers, and monthly production capacity is 50,000 units, so customization orders run alongside standard production rather than displacing it.

Which of the three gives the lowest cost per hectare?

Cost per hectare is driven mainly by how many sprinklers, risers and connections a block needs, and that number follows throw reach. The FSW80, with a maximum reach of 85.7 m, covers the largest area per unit and therefore needs the fewest units per hectare of the three. The FSC50 (up to 56 m) and the FSN50 (up to 53 m) need progressively more units for the same area. Because configuration, nozzle choice and connection format change the total, pricing is quoted against a specific project rather than a fixed list.

Can I test a rain gun before committing to a full system?

The minimum order quantity is 20 units, which allows a block or a trial zone to be equipped first. Every unit is 100% tested by the manufacturer before shipment, and after-sales support is provided remotely, so a first order can be validated in the field before the rest of the system is specified.

What is the production lead time for an order?

Lead time is within 20 days, against a monthly capacity of 50,000 units. If you send your field size, available pressure at the outlet, required flow and connection format, the sales team can confirm which of the three models fits and return a quotation for that configuration. Contact Shally at sales@foison-irrigation.com or +86 186 5822 6303, or review the full product range in the FOISON Sprinkler catalogue.

Conclusion: Which of the Top Three Should You Specify?

The ranking by coverage is straightforward: the FSW80 leads on maximum reach (23–85.7 m) and pressure ceiling (0.9 MPa); the FSC50 follows with the longest reach in the 50 series (up to 56 m) and the lowest starting pressure (0.15 MPa); the FSN50 closes the list with the shortest maximum reach (53 m) but the longest minimum throw (26 m).

The buying decision, however, follows the site rather than the ranking. A high-pressure main and a large open area point to the FSW80 and its 80 flange connection. A modest pump on a semi-fixed layout points to the FSC50. A site with uneven pressure across blocks points to the FSN50, where the 26 m floor guarantees usable coverage before the system reaches full pressure.

All three are produced by Xuzhou Foison Sprinkler Irrigation Equipment Co., Ltd under ISO 9001 certification, with OEM/ODM customization, a 20-unit minimum order, a lead time within 20 days and remote after-sales support — so the choice can be narrowed to one model before any order is placed.

FOISON Sprinkler irrigation equipment manufacturer, Pei County Industry Area, Xuzhou City, Jiangsu Province, China.