Category: Motor Pumps

PROFESSIONAL PETROL MOTOR PUMP WITH THREE-DIAPHRAGM PUMP AND LONCIN G200F ENGINE

APS 31 Loncin

APS 31 Loncin is the Dal Degan professional petrol motor pump equipped with a Comet APS 31 three-diaphragm pump and a 5 HP Loncin G200F 4-stroke OHV petrol engine, designed for installation on wheelbarrow sprayers, trolleys, mobile units, pick-up beds, mounted sprayers, and professional spraying setups. It is the ideal solution for those requiring complete operational autonomy in the field, without depending on the availability of the power grid. The Comet APS 31 pump features a three-diaphragm configuration, a technology that ensures more uniform flow distribution compared to traditional two-diaphragm pumps, with fewer residual pulsations, less wear on internal components, and longer service life. The suction and delivery valves are easy to inspect and made with stainless steel seats and plates, a solution that improves reliability and resistance to products typically used in agricultural and professional treatments. The pump is also equipped with a pressure accumulator and safety valve, elements that stabilize delivery and protect the hydraulic circuit during operation. The engine and pump are coupled via a professional oil-bath gearbox, a technical solution that ensures continuous lubrication of the transmission, reduces mechanical stress, and helps increase the service life of the entire motor pump unit. The Loncin G200F engine is a single-cylinder 4-stroke OHV petrol engine with a displacement of 196 cc, cast iron cylinder, and a maximum power of 5 HP (3,728 W). Compared to traditional 2-stroke engines, it offers numerous advantages: greater reliability, lower fuel consumption, less noise, easier starting, and no need for fuel mixing. Oil-bath lubrication and a 3.1 l tank ensure adequate autonomy even during long work sessions. The engine-pump unit is installed on a sturdy metal base designed for mounting on various equipment. Thanks to a flow rate of 25 l/min and a maximum pressure of 30 bar, the APS 31 Loncin can simultaneously power:

up to 3 manual lever or knob lances;
up to 2 professional spray guns;
one long-range Mitra spray lance;
a pair of side booms with a 3+3 nozzle configuration for row treatments.

This versatility makes it ideal for phytosanitary treatments in vineyards and orchards, green space maintenance, professional pest control, platform applications, and mobile systems for specialized agricultural services. The pressure regulation unit allows for precise adjustment from 0 to 30 bar and features two standard outlets plus provision for a third. The bypass fitting returns unused liquid to the tank, contributing to the continuous mixing of the solution and keeping suspensions and formulations homogeneous throughout the treatment. The APS 31 pump is entirely manufactured in Italy by Comet S.p.A., one of the most recognized brands in the professional spraying pump sector. The Loncin engine ensures an excellent quality-price ratio and is widely used in agricultural and professional applications.

Fields of Application

Professional spraying and weeding treatments with complete field autonomy
Medium and large crops, parks, gardens, vegetable gardens, greenhouses
Professional and semi-professional vineyards, orchards, olive groves
Distribution of detergents, paints and products in aqueous solution
Setup of wheelbarrows, spray carts and wheeled sprayers
Setup of units for pick-up beds, motor carts and trailers
Professional urban and environmental pest control services
Row treatments with side booms with butterfly jets
Simultaneous work of two or three operators with multiple lances
Use in areas not served by electrical grid
High-pressure washing and cleaning operations

Technical Data

TYPE	PROFESSIONAL PETROL ENGINE PUMP
PUMP TYPE	DIAPHRAGM
NUMBER OF DIAPHRAGMS	3
FLOW RATE	25 L/min
MAXIMUM PRESSURE	30 BAR (adjustable from 0 to 30 bar)
SUCTION / DELIVERY VALVES	STAINLESS STEEL SEAT AND DISC
PRESSURE ACCUMULATOR	YES
SAFETY VALVE	YES
VALVE INSPECTABILITY	QUICK, ALL POSITIONED ON DELIVERY SIDE
ENGINE BRAND	LONCIN
ENGINE MODEL	G200F
ENGINE TYPE	SINGLE CYLINDER 4-STROKE OHV (overhead valves)
DISPLACEMENT	196 cm³
ENGINE POWER	5 HP / 3,728 W
MAXIMUM ENGINE SPEED	3,600 rpm
CYLINDER MATERIAL	CAST IRON
FUEL	PETROL (no mixture)
ENGINE LUBRICATION	OIL BATH
FUEL TANK CAPACITY	3.1 L
ENGINE-PUMP TRANSMISSION	DIRECT FLANGE MOUNTING WITH OIL BATH MULTIPLIER
PRESSURE REGULATOR	SEMI-PROFESSIONAL, FROM 0 TO 30 BAR
STANDARD OUTLETS	2 (with provision for third outlet)
OVERFLOW FITTING	YES, FOR RETURN TO TANK AND MIXING
BASE	WIDE METAL BASE WITH VARIOUS HOLES FOR APPLICATIONS
PUMP COUNTRY OF MANUFACTURE	ITALY
ENGINE COUNTRY OF MANUFACTURE	CHINA
SUPPLIED WITH	INSTRUCTION MANUAL
CONFIGURATION	READY TO CONNECT, SUPPLIED ASSEMBLED

Benefits

Three diaphragms: smooth delivery, less pulsation, longer life
Total autonomy: petrol engine for work in complete independence from electrical grid
4-stroke OHV engine: greater reliability compared to traditional 2-stroke engines
Pure petrol without mixture: no fuel preparation or aging issues
Easy starting even after long periods of non-use
Dual outlet as standard with provision for third: simultaneous work of multiple operators
Versatility of use: up to 3 manual lances, 2 professional lances, 1 Mitra, 3+3 side booms
Oil bath transmission: constant lubrication, superior unit durability
Quickly inspectable stainless steel valves: simplified maintenance
Pressure accumulator and safety valve: stable delivery and protected circuit
Overflow fitting: continuous mixing of product in tank
Wide perforated metal base: installable on carts, wheelbarrows, beds
Italian-made Comet pump: reliability and widely available spare parts
Cast iron engine cylinder: superior durability compared to light alloy cylinders
Reduced consumption and noise compared to 2-stroke engines