UV-283 UV-284 UV-285 AN ISO 9001:2008 CERTIFIED COMPANY. PISTON VALVE A Complete Isolation IBR CERTIFIED

Transcription

1 UV UV UV AN ISO 00:00 CERIFIED COMPANY PISON VALVE A Complete Isolation IBR CERIFIED

2 PISON VALVE Class 0, 00 & 00 UAM PISON VALVE FEAURES : Leak Proof Isolation. All sealing valve components may be easily replaced in line. Long term Operation. No gland packing required. Low Coefficient of friction and low Operating torque. Larger effective sealing area 00% more than globe valve. APPLICAION : Steam Superheated Steam. L.P.G Ammonia, DESIGN SANDARDS : ASME B., ASME B., ASME B. API0 IBR 0 Inspection & testing API Body design condition Max. Allowable pressure Min. Allowable temp. Max. Operating Pressure for saturated steam Max. Operating temp. Max. ydraulic body testing CL00 CLASS 00. C 0 C 0. 0 C C barg ECNICAL DAA CL00 CLASS 00 C 0 C 0 C C barg CL0 CLASS 0. C 0 C. 0 C C 0 barg FIG A

3 (FIG A) S. NO. SANDARD MAERIAL COMBINAION PAR MAERIAL BODY LOWER SEALING RING PISON SPACER BUS UPPER SEALING RING CECKNU BRASS BONNE SPINDLE AND WEEL S.G. IRON WASER MILD SEEL NU NUS BELLIVILE WASER SPRING SEEL SUDS SANDARD ASM A Gr.WCB AISI 0 BS : ASM A Gr.WCB ASM A0 DIN Gr C0 ASM A Gr B FLANGED CL FLANGED CL FIG B

4 (FIG B) S. NO. SANDARD MAERIAL COMBINAION PAR MAERIAL BODY LOWER SEALING RING PISON SPACER BUS UPPER SEALING RING PISON ROD BONNE SPINDLE AND WEEL S.G. IRON WASER MILD SEEL NU NUS BELLIVILE WASER SPRING SEEL SUDS NU & WASER SEALING RING CECK NU BRASS GLAND YOKE BUS SANDARD ASM A Gr.WCB AISI 0 ASM A Gr.WCB ASM A0 DIN Gr C0 ASM A Gr B ASM A Gr B BS : FLANGED CL FLANGED CL FIG C

5 (FIG B) S. NO. SANDARD MAERIAL COMBINAION PAR MAERIAL BODY FORGED LOWER SEALING RING PISON SPACER BUS UPPER SEALING RING PISON CECKNU BRASS BONNE FORGED SPINDLE S.S. AND WEEL S.G. IRON WASER MILD SEEL NU NUS BELLIVILE WASER SPRING SEEL SUDS SANDARD ASM A AISI 0 BS : ASM A ASM A0 DIN Gr C0 ASM A Gr B 0 End Connection SCREWED / SOCKE WELDED CL00 A L." BSP /" BSP " BSP /" BSP 0 ~ W Maintenance a) o Stop Steam Leakage i) All mechanical devices require maintenance at regular intervals for continuos efficient operation. Regular scheduled inspection of all valves is essential especially on valves which are operated only occasionally. ii) In piston valve, the bonnet must be tightened down to prevent stem gland seal & lower Seat leakage. Applying the recommended torque to nut will ensure any steam leaks are avoided. iii) he piston valve is designed for either bonnet assembly replacement which includes all the necessary internal parts, or simple inline replacement of the upper and lower sealing rings. iv) he valve spindle should be checked at regular interval to ensure adequate grease is present to ensure efficient valve operation. v) When Piston valve fitted on high temperature applications or where severe weather conditions prevail, the grease should be checked more rapidly.

6 b) o Replace Sealing Rings & Piston i) Close the piston valve. ii) Remove the bonnet nuts () and washers. iii) Withdraw the bonnet () complete with spindle () and piston (). iv) Remove the upper sealing rings (), lantern bush () and lower sealing ring (). v) Ensure the inside surface & sealing ring's sitting surface of the valve are clean. vi) Fit the new lower sealing ring (), lantern bush () and the upper sealing ring (). vii) Refit the bonnet () complete with spindle () and piston () and tighten nuts () to the recommended torque. our associates months GUARANY V.K. Valves Pvt. Ltd. Regd. Office & Works: C, Focal Point Extension, Jalandhar 00 India. Phones: Off.: 00, 0 Fax No.: 00, 0 getvkv@gmail.com, info@vkutam.com Authorized reseller s stamp