Ref. 182A / PN 10-16 PRESSURE SUSTAINING / REDUCING CONTROL VALVE

GENERAL CHARACTERISTICS

DAVINCI PRESSURE SUSTAINING / REDUCING CONTROL VALVES are designed to perform two essential pressure-control functions within a single hydraulic unit. The valve maintains a preset minimum upstream pressure while simultaneously reducing the downstream pressure to a stable and controlled value. This dual regulation protects the supply network from excessive pressure loss and safeguards downstream equipment against high or fluctuating pressure conditions.

Available in sizes from DN50 to DN800 mm, the valve is manufactured with a high-strength ductile iron body, providing excellent mechanical resistance and dependable operation in demanding installations. All iron components are protected by a fusion-bonded epoxy coating, offering enhanced corrosion resistance and extended service life in municipal, industrial, and infrastructure applications.

Its internal operating mechanism includes a top- and seat-ring-guided stem and diaphragm assembly, developed to provide smooth movement, precise response, and long-term reliability. The nylon-reinforced diaphragm withstands continuous operating cycles, while the stainless steel seat and disc-retainer ring ensure durable sealing and effective protection against corrosion. The valve also provides drip-tight shut-off, helping prevent unwanted leakage when fully closed.

Thanks to its globe-pattern design, the valve offers excellent regulating and modulation characteristics under varying flow and pressure conditions. Its main operational advantage is the ability to preserve sufficient upstream pressure without compromising controlled downstream supply, making it particularly valuable in networks where different pressure zones must operate simultaneously.

The valve is engineered for convenient inspection and servicing. Maintenance can be carried out without removing the valve from the main pipeline, reducing installation downtime, simplifying routine operations, and lowering maintenance costs.

DAVINCI PRESSURE SUSTAINING / REDUCING CONTROL VALVES are widely used in municipal water distribution systems, irrigation networks, pumping stations, industrial facilities, mining operations, HVAC and cooling installations, high-rise buildings, reservoir supply lines, and fire protection systems. They are especially suitable for applications where the upstream network must retain adequate pressure while a lower and more stable pressure is required downstream.

A complete selection of pilots, filters, pressure gauges, isolation valves, and control accessories is available to adapt the valve to specific operating requirements. Optional V-Port trim can be supplied for enhanced regulation at low flow rates, while a double-chamber design is available for specialized hydraulic conditions. Please consult the factory for technical evaluation and configuration recommendations.

Ref. 182A / PN 10-16 PRESSURE SUSTAINING / REDUCING CONTROL VALVE

SKU: Ref. 182A / PN 10-16

Size Range: DN50 up to DN800mm
Top and seat ring guided stem and diaphragm assembly for long life and reliability.
All iron components are fusion epoxy bonded for corrosion resistance.
Easy maintence without removal from the main line.
Nylon reinforced diaphragm for long term service.
Drip tight shut off.
Globe design for superior control characteristics.
Ductile iron bodies for higher strength and durability.
Corrosion resistant stainless steel seat and disc retainer ring.
Various pilots and accessories available for configuration into many applications.
Special V-Port and double chamber are options, please consult factory.
Manufacture according to: EN 1074-5
Design and testing standards: BS EN 1074-5, ISO 5208, BS EN 12266-1 and BS EN 558-1
Flange connections: EN 1092-1 / EN 1092-2, PN10, PN16 and PN25; ANSI Class 150
Face-to-face dimensions: EN 558-1, Series 1

Working Conditions
Pressure ratings: 1.0 MPa, 1.6 MPa and 2.5 MPa
Working temperature: −10 °C to 80 °C
Suitable medium: Water
End connections: PN10, PN16 and PN25
Consult the factory for other applications

Pressure Tests
Pressure tests according to EN 12266-1, Leakage Rate A, and GB/T 13927-1992
Body test pressure: 1.5 × PN, up to 24 bar
Seat test pressure: 1.1 × PN

EU Pressure Equipment Directive
Directive 2014/68/EU
Products up to DN300 are excluded under Article 1, §2(b)
Risk Category I, Module A, for sizes from DN350 to DN600
(a) Any descriptive information or samples supplied by DAVINCI VALVES LTD, or on its behalf, are for general guidance only and do not form part of any contract between DAVINCI VALVES LTD and the customer and the customer admits that it was not induced to enter into the contract by any representation contained in such information or sample. (b) DAVINCI VALVES LTD may at the request of the customer without being under any obligation to do so, furnish technical advice concerning the use of the products and such assistance will be given to the best of DAVINCI VALVE’s ability but this shall be on the express understanding that any such advice or assistance is given and accepted at the customer’s risk and DAVINCI VALVES shall not be liable for any loss, damage or claims arising there-from. (c) No liability will be accepted for work carried out or material supplied to the customer’s own drawings, design or specifications. (d) The submission of a quotation or acceptance of any order by DAVINCI VALVES in no way implies any responsibility on its part for any by-law, planning or other approval which may be required by the customer.

Ref. 182A / PN 10-16 PRESSURE SUSTAINING / REDUCING CONTROL VALVE

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