Valve on - Import export

- Size DN100 - 150 - 200 - 250 - 300 - 350 - 400 - 2 half-bodies in cast aluminum with double flange: identical upper and lower flange - Possibility of installing the fitting for flexible connection SFU - Pressure / vacuum seal up to 0.2 bar - Disc in aluminum or stainless steel AISI 304 (upon request in AISI 316) - NBR gasket (upon request suitable for contact with food) - HNBR Therban - Viton - Gasket profile: for sealing only on the disc or covering the flanges - DN5482 splined drive shaft or ISO 5211 square, both in standard or extended length - ATEX certified version upon request - Manual, motorized or pneumatic actuators

The valve closes totally the pipe line when back flow occurs. The valve is complete with an hydraulic control circuit able to regulate operation’s speed during closing, preventing surge. TYPICAL APPLICATIONS Pump protection; prevention of line emptying; balance in inter-connected hydraulic lines.

We also make bags with HEAT SEALING VALVES to guarantee perfect closure. Furthermore, bags with easy opening on the EASY - OPEN bottom supplied mainly on foreign markets are increasingly in demand.

- Size 150 - 200 - 250 - 300 - 350 - 400 - 500 - 600 - 700 - 800 mm - One-piece valve body in carbon steel or AISI 304 - Square section packing seal, compressed between two stainless steel profiles held in place by two aluminum flanges that allow easy access, maintenance and adjustment of the packing, even with the valve installed - Invitation hopper for the passage of the product - Given its compact and robust structure, it is also suitable for heavier applications with materials such as gravel, sand and coal - ATEX certified version upon request - Pneumatic, manual or motorized actuators

The valve opens fully or shuts off in response to electric signals. The valve is controlled by a solenoid that allows control liquid to flow in the upper chamber in order to close the main valve or, alternatively, drains upper chamber in order to open the main valve.

The valve reduces upstream pressure to a pre-set lower and constant downstream pressure value, regardless of fluctuating flow or varying upstream pressure.

PROGRAMMABLE ELECTRO-HYDRAULIC VALVE Battery controller operated valve.

Hydraulically or Pneumatic operated. TYPICAL APPLICATIONS Irrigation, water treatment, animal feeding plants.

The valve controls downstream flow to a pre-set and constant value in order to limit water consumptions and preserve pipeline fill rate or to set a maximum demand value. The valve is controlled by a differential hydraulic pilot that senses the pressure fall generated by water flow into a calibrated orifice.

The valve reduces high upstream pressure to a pre-set lower and constant downstream pressure level, regardless of fluctuating flow or varying upstream pressure. A hydraulic regulating pilot drives the valve. The pilot is able to detect upstream pressure values and regulates closing steps of the valve until the pre-set pressure value is restored.

This valve protects pumps and pipes from pump startup and shutoff pressure surges due to power failure. Pump off means valve normally closed. If pump starting cause pressure surge, the pilot smoothly opens the valve to limit pressure rising.

The valve maintains downstream pressure to a constant and pre-set rate of upstream value. No pilots needed. The valve chamber is directly exposed to the downstream pressure and this varying pressure value modulates the valve to open or close according to upstream pressure.

The valve controls tanks and reservoirs emptying and avoids overflow. The valve operates by means of a differential hydraulic float complete with regulating levels mounted on the tank side. The float maintains the valve closed and opens only when the minimum pre-set level is reached. Once the valve is open, float allows tank inlet until maximum water level is reached again.

The valve assures maximum water level into tanks and reservoirs and avoids overflow. The valve operate by means of a modulating float, mounted on tank, able to regulate gradual opening of the valve when water level goes down from maximum.