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[1] Fastening Bolts
Only four bolts (up to 10"; DN250 valve) fasten valve cover to body, ensuring quick in-line inspection and service.
[2] Valve Cover
Locates, centralizes and fastens diaphragm and spring ensuring smooth and accurate performance. Simple construction enables quick in-line inspection and service.
[3] Auxiliary Closing Spring
One single spring fully meets valve requirements for operating pressure range, ensuring low opening pressure and secured closing.
[4] Diaphragm Assembly
One piece elastomeric assembly that includes a peripherally supported flexible diaphragm, vulcanized with a rugged radial seal disk.
No need for special types of diaphragms to meet different operating conditions.
Progressive dynamic guidance, resulting in exceptionally stable action and restrained closing.
Valve opens and closes drip tight even with very low pressure supply.
Perfectly balanced diaphragm with no distortion caused by uneven hydraulic forces on shut-off or during regulation.
Exceptionally stable and chatter-free action during shut-off and pressure regulation.
[5] Body Threads
No need for nuts, simplifying valve disassembling and assembling for maintenance.
[6] Wide Body Valve
Hydro-dynamically designed for efficient flow with minimal pressure loss and excellent resistance to cavitation.
[6.1] Diaphragm Supporting & Guiding
[6.2] Diaphragm Balancing Chamber
[6.3] Valve Seat: Full bore, valve port area clear of obstructions; no ribs or stem guides. Flow entrance is vertical to seal disk.
[6.4] End Connections: Conforms to pressure ratings and standards of: ISO, ANSI, JIS, BS, and others.

3-Way Control Modes

Fully Open Position
When upstream pressure drops, the pilot
blocks the pressure port and opens the
drain port, venting the control chamber
to the atmosphere. This fully opens the
valve, minimizing head loss.

Modulating Closed
The pilot switches upon pressure rise,
blocking the drain port and opening
the pressure port.
This pressurizes the control chamber,
forcing the valve to modulate closed

Locked Position
When sensed pressure is equal to setting,
the pilot shaft moves and blocks both
the drain port and the pressure port.
This locks the pressure in the control
chamber, freezing the valve in its last
position until conditions change.

Zero Flow Position
When demand drops to zero,
downstream pressure begins to rise as
the flow enters a closed line. The pilot
switches and pressurizes the control
chamber initiating a valve's irreversible
closing process, eventually causing it to
seal drip tight.

NOTICE

1. If you want pivot, please give us the following details"

- your country and name

- land area (in ha or m² )

- crop and water application (mm/day or m³ /h or LPS)

- working degree (0- 360^O )

- if you need any extras (options) for pivot such as Diesel generator, end gun with booster pump, corner control system for end gun, Fertilizer unit

2. Small parts are not sold seperately, except for large amount.

GLOBAL MANUFACTURER OF IRRIGATION EQUIPMENT SINCE 2002

Rainfine is an international irrigation company based in Dalian, China that specializes in center pivot and lateral move systems.

We are a leading manufacturer across the globe, supplying irrigation parts and equipment to major manufacturers in the United States, France, Russia, Australia, Sudan, Kazakhstan, Nigeria and Saudi Arabia.

Our irrigation manufacturing meets the following standards:
International: ISO15873 ISO12374 ISOTR15155
French: NFEN909
British: BSEN12325-2
American for galvanizing: A123
ISO9001-2008 QC standard

Rainfine's work

-land surveying and planning

-Pipeline network calculation
-Pump station calculation and design
-Business proposals and budget plans
-Pumps, valves and irrigation machines supply
-Installation and commissioning

Warranty

-1 year concerning electric equipment
-10 years/10 000 working hours for gearboxes and gear motors whichever expires earlier
-20 years concerning the galvanized equipment against corrosion
-3 years for tires and rims