GENERAL DESCRIPTION
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- The spindle watertightness is achieved with two O-rings and
a retainer.
- The design permits the easy replacement of spindle seals
while in service.
- A spindle dustguard is also fitted.
- Spindle in 13% (standard) or 17% (Option) Cr. stainless
steel, polished and threads formed by cold rolling.
- Wedge in ductile cast iron of 50 Kg/mm2 (GGG-50) with
central guides to avoid rubber friction when operating the valve. Internally and
externally coated with NBR or EPDM (according to the customer's order).
- Wedge nut of forged copper alloy.
- Body-bonnet gasket inserted in sealing-groove.
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- Plated sealed or stainless steel (DIN 912) retaining
bolts.Flanges to EN1092-2:
BSEN 1092-2 AS2129.
- Full and straight bore avoids turbulence, pressure loss and
Venturi effect.
- All valves have foot support.
- Valves are supplied bare shaft with square cap or handwheel.
- Clockwise closing as standard.
Counterclockwise can be supplied to special order.
- Anticorrosion coating:
- Rilsan (nylon 11) Blue inside and outside special dipping technology applied (standard).
- Enamel internal and epoxy powder external, electrostatically applied.
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QUALITY CONTROL
Raphael valves are fully tested to IS-61.
CHARACTERISTICS
- Each valve is tested for sealing test at working pressure.
Each valve is tested hydrostatic (body) test at 150% of working pressure.
Full flow.
Full sealing in both directions.
Maintenance free.
Reduced operating torque.
ISO-DIN-UNE-NF, AWWA, JIS and SII.
The valve is designed with minimum head-loss
(no more than a pipe of equal diameter and length).
Suitable for horizontal and vertical installation.
Does not require any special service.
APPLICATION
Drinking water, sewage, seawater, etc.
Air conditioning or compressed air.
Central heating.
Industrial services.
Irrigation and fire lines.
Pressure or vacuum.
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Packing Detail
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PRESSURE & TEMPERATURE
From -1 to +25 kg/cm2 (PN 6/10/16 and 25).
From -10°C to +110°C.
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OPTIONS
The following can be provided under special order:
- Thicker paint, stoved enamel, ceramic, dielectric (200.000V), Teflon.
- Counter clockwise closure.
- Rubber for special applications.
- Different colours (RAL) to identify different fluids.
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