Parker Low Pressure Relief Valve

The Parker Low Pressure Relief Valve provides an automatic protection mechanism for process instrumentation systems. When upstream pressure exceeds the closing force exerted by the valve’ s spring, the lower stem opens and permits flow through the valve’ s outlet port - which can be ducted to a safe place or released to atmosphere. Flow rate increases proportionately to the increase in upstream pressure. CE marked and certified to the highest Category-IV level of the Pressure Equipment Directive ( PED) , the valve’ s design provides users with accurate and consistent cracking and resealing operation. FEATURES • Pressure settings are externally adjustable. Six different spring ranges provide greater system sensitivity and enhanced performance • Colour coded springs and labels indicate spring cracking range • Lock wire feature secures a given pressure setting • Back pressure has minimum effect on cracking pressure • Orifice sizes: 5.2mm ( 0.203” ) • Multiple end connections available Specifications Working Pressure Maximum Cold Working Pressure: 400 psi ( 27.6 bar) . Up to 600 psi ( 41 bar) during relief with no internal seal damage. Cracking Pressure Six springs, from 10 psi to 400 psi in the following ranges: 10-25 psi ( 0.7-1.7 bar) ; 25-50 psi ( 1.7-3.4 bar) ; 50-100 psi ( 3.4-6.9 bar) ; 100-150 psi ( 6.9-10.3 bar) ; 150-225 psi ( 10.3-15.5 bar) ; 225-400 psi ( 15.5-27.6 bar) . Cracking pressure within 3% of set pressure. Reseat pressure within 15% of cracking pressure. Note: Valves which are not actuated for a period of time may initially crack at higher than set pressures. Maximum Relieving Flow Water 2.4l/ min @ 10 psi set pressure with zero back pressure. Nitrogen 6.8 l/ min @ 10 psi set pressure with zero back pressure. Both at ambient temperature. Note: For a ‘ safe’ system the relieving flow capacity should exceed the maximum input flow. The maximum discharge capacity is not a given design specification for this valve, therefore the maximum discharge capacity quoted within the instructions is for informative purposes only. Should this guideline value not be sufficient to protect equipment or systems from exceeding maximum pressure, another type of relief or safety valve should be used. Contact telp: + 62 858 9038 2651, email diantamasukses( at) gmail.com and brazedplate( at) gmail.com