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Solar Safety Valve

Solar Safety Valve
Solar Safety Valve
Product Code : 163
Product Description

The Solar safety valve with manual hand wheel is an automatic safety valve designed to open in the event the internal pressure of the system reaches a predetermined maximum pressure (Preset Nominal Pressure Pnr)allowing the water to be released through it. The safety valve resets automatically when the internal pressure of the system returns below the predetermined maximum pressure. All the moving parts of this safety valve, including the regulating spring, are isolated from heat-transfer fluids by an industrial rubber diaphragm. The Solar safety valve with manual hand wheel satisfies the essential safety requirements stipulated in the EU Pressure Equipment Directive (PED) 97/23/EC.
Pressure : 
Maximum allowable working pressure (PS) 10 bar
Preset nominal pressure (Pnr) 2.5-3-4-6-8 bar (factory set and sealed)
Minimum sealing pressure (Pc)  -5 % of the Pnr
Overpressure (Po) 10% of the Pnr
Reset value (Pf)  -20 % of the Pnr
Temperature : 
Pipeline connection  160° C
Threading : 
Maximum allowable  Threads according to ISO 228/1
Compatible fluids : 
Generic fluids  water and Group 2 fluids
Heat transfer fluids in compliance with Italian national standards (UNI 8065 § 6)  
Glycolate solutions (glycol) 50%
Requirements and tests as per : 
Solar thermal energy  ISO 4126-1 § 7.2
Type Test (functional aspects) with reference to EN 12976-2 Annex D par. 5.6.1.
Pressure test according to Annex I, Section 3.2.2 of the PED directive.
PED operating limits : 
Maximum allowable temperature (TS) 160° C
Maximum allowable working pressure (PS) 10 bar
Conformity assessment procedures Modules B and D
PED risk category IV (CE 1115)
Flow Coefficient (K) = 0.05 - Classified as an "Ordinary Valve" under EN 10412 § 11.4.2
Brass Body EN 12165 - CW617N
Head valve  Brass - EN 12164 - CW614N
Hand wheel PA66-GF30 polyamide (nylon 66) reinforced with glass fibre
Spring and counterweight in STAINLESS STEEL  PA66 polyamide (nylon)
Diaphragm 70 Sh preshaped EPDM rubber (peroxide cured)
Sm GALVANIZED STEEL spring EN 10270-1
Nickel plating ELECTRO DEPOSITED COATING EN 12540 (Cu/Ni5s)
15 - F - 1/2"
Features Table


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Phone :+917259620676
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Mr. Chintan Sheth (Manager)
Mobile :+917259620676