OVF40
4Pages

Catalog excerpts

ADCA OVERFLOW/BYPASS VALVES OVF40 DESCRIPTION The ADCATrol OVF40 is a series of single seated, two-way overflow valves with inline connections. These valves are mainly used in closed loop systems to ensure that a minimum flow is kept in the event that all connected consumers are in a low load condition or have simply shut down. In these scenarios, the valve will prevent problems such as pressure surges, pump cavitation and overheating. The spring force keeps the valve closed, until the upstream pressure, which acts on the underside of the plug, exceeds the set pressure thus opening the valve and allowing flow to the downstream side. The set pressure is manually adjusted during commissioning by compression of the spring with the adjustment screw located on the top of the valve yoke. The set pressure corresponds to the differential between upstream and downstream pressures across the valve. MAIN FEATURES Compact and versatile. Stainless steel bellows sealing and trim. Metal to metal valve sealing. V-port guided valve plug. OPTIONS: Soft or stellited valve sealing. Perforated plugs. Water, diathermic heat transfer oil and other fluids compatible with the construction. AVAILABLE MODELS: SIZES: REGULATING RANGES: OVF40S – carbon steel. OVF40i – stainless steel. DN 15 to DN 80. DN 15 to DN 32 – 0,5 to 5 bar; 2 to 8 bar. DN 40 – 0,5 to 6 bar. DN 50 – 0,5 to 5 bar; 2 to 7 bar. DN 65 and DN 80 – 1 to 4 bar. Flanged EN 1092-1 PN 16 or PN 40. Standard PN 16 DN 65 flanges are supplied with 4 holes. 8 holes, according to EN 1092-1, on request. CE MARKING – GROUP 2 (PED – European Directive) PN 16 VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

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ADCA BODY LIMITING CONDITIONS * OVF40S FLANGED PN 16 ALLOWABLE RELATED PRESSURE TEMPERATURE 16 bar FLANGED PN 40 ALLOWABLE RELATED PRESSURE TEMPERATURE FLANGED PN 16 ALLOWABLE RELATED PRESSURE TEMPERATURE FLANGED PN 40 ALLOWABLE RELATED PRESSURE TEMPERATURE 40 bar PLUG DESIGN V-PORT GUIDED Sealing: Characteristic: Flow direction: Rangeability: Leakage: V-PORT GUIDED (SOFT SEALING) Sealing: Characteristic: Flow direction: Rangeability: Leakage: Metal to metal Linear (PL) From below 30:1 Class IV, acc. to IEC 60534-4 PTFE/GR Linear (PL) From below 30:1 Class VI, acc. to IEC 60534-4 FLOW RATE...

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ADCA DIMENSIONS (mm) DIMENSION A VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

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* Valve plug * Stem with welded metal bellows * Serrated washer Stainless steel / Graphite Bellows housing Zinc plated steel Stainless steel / Graphite Stainless steel / Graphite Expanded graphite Bellows bonnet Lower yoke flange Lower spring guide * Adjustment spring Yoke column Upper spring guide Adjustment screw Ball bearing Zinc plated steel Upper yoke flange Zinc plated steel * Available spare parts. VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

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OVF40 4Pages

Catalog excerpts

All VALSTEAM ADCA Engineering S.A. catalogs and technical brochures

OVF40
4Pages