Product Support 030605 - Steam Forum

1 HopkinsonsINDEX2 Weir valves & ControlsFirst choice for process protectionWVC-HOP001-R0 Weir valves & Controls4 The Hopkinson Story6 - 17 Company Milestones18 Boiler Mountings & Valves18 Parallel Slide Gate valves (a) Operating & Design Features19 - 20(b) Product Application20(c) Hopkinsons Product Range & Features20(d) Valve Construction20(i) Back Seating(ii) Packing Under Pressure(iii) Seats & Discs(e) Comparison of Parallel Slide Valve with Wedge Gate22 - 25(i) Seating Principles(ii) Thermal Binding(iii) Ease of Maintenance(f) Optional End Connections26(g) Bolted Bonnets26(h) Stuffing Box Design26 - 28(i) Exfoliated Graphite Packing(ii) Upgrading of Conventional Glands & Pressure Seal Bonnets(iii) Water Sealed Glands(i) High pressure Parallel Slide Gate Valves28 - 33(i) Pressure Seal Bonnets(ii) Venturi Bore Design(iii) Follower Eye(iv) Seat Velocities(v) Product Ratings(vi) Relationship Between Nom.

2 Pipe Size & Valve Seat Diameter (vii) Vee Port Outlet Seats(viii) Steam Purging with Venturi Valve Design(ix) Process, Petrochemical & Nuclear MarketBypass valves (a) Application33(b) Method of Operating34 Equalising Bypass valves & Devices(a) Hydraulic Lock35(b) Balanced Spindle Valves35 - 36(c) Equalising Pipes & Applications36(d) Over Pressure36 - 37(e) Alternative Equalising Devices37(f) Equalising Bypass37 - 38 Types of Main Valve Operation38 - 42 Check & Non-Return valves (a) Swing Check Valves43(b) Low & High Pressure Variants44(c) Feedwater Check Valves44(d) Vertical Lift Check Valves45(e) Comparitive Disc Movements (Vertical Lift & Swing Check)45(f) Stop Check valves (Stop & Non-Return valves )45(g) Tilting Disc Check Valves46 - 47(h) Bled Steam (Extraction Steam ) Non-Return Valves48 - 53(i)Features of Hopkinson Design(ii) Valve Application(iii) Competition3 Weir valves & ControlsFirst choice for process protectionHopkinsonsINDEXWVC-HOP001-R0 Reheater isolation Devices53 - 56 Drain & Blowdown valves (a)

3 Comparison of Types56 - 58(i) Wedge Gate Valve(ii) Globe Valve(iii) Ball Valve(iv) Parallel Slide Gate Valve(b) Rack & Pinion Blowdown Valves58 - 59(c) Uniflow Drain Valves59(d) High Performance Parallel Slide Gate Valves60 Water Gauges (Water Level Indicators)(a) Absolute Type60 - 61(b) Plate Glass Type61(c) Bulls Eye Type62(d) Try Valves62 ASME Section 1 Safety valves (a) Definition of Safety Valve Types & Terms63(i) Safety Valve(ii) Relief valve(iii) Safety Relief Valve(iv) Set Pressure(v) Simmer(vi) Lift(vii) Rated Capacity(viii)Accumulation(ix) Overpressure(x) Blowdown(b) Hopkinsons Product Range & Ratings 64 - 66(i) Features & Benefits(ii) Principal Competitors(c) Hopkinsons Steam Test Facility67(d) Safety Valve Mounting67(e) Hydrostatic Testing68 - 69(i) Hopkinsons Products(ii) Competitors(f) Servo Loaded Direct Acting Safety Valves69(g) Anti Simmer Devices69 - 70 Feed Water Heaters71 Feed Water Heater Bypass Systems(a) Electrically Operated Gate Valves72(b) Spring Loaded Bypass Valves72 - 73(c)

4 Competitors73(d) Atwood & Morrill 3-Way Valves73 - 74(e) Medium operated 2-Way Changeover Valves75 Combined Cycle Power Plant SystemFossil Fuel Power Plant System4 Weir valves & ControlsFirst choice for process protectionWVC-HOP001-R0 HopkinsonsPRODUCT Support MANUAL3-way valvesCheck valvesGate valvesGlobe valvesControl butterfly valvesIsolation butterfly valvesHigh performancebutterfly valvesTriple offset butterfly valvesGlobe control valvesTurbine bypass valvesChoke valvesDesuperheatersSevere service valvesControl valve actuatorsPipeline surge absorbersPulsation dampersThermal

5 ExpansioncompensatorsCheck valvesGate valvesGlobe valvesReheat isolation devicesSafety valvesSide entry ball valvesTop entry ball valvesSubsea ball valvesRotary gate valvesIntegrated systemsSpring-loaded safetyrelief valvesPilot operated safetyrelief valvesTwo-way change-over valvesThermal relief valvesTank blanketing systemPilot operated nuclearsafety valvesTriple offset butterfly valvesWeir valves & Controls The key to the success of Weir valves & Controls isour capability to deliver engineering solutions thatadd value to the customer s process.

6 We offer a totalpackage of products to meet end-to-end projectrequirements. Using our own analysis andconfiguration system, we will design and deliver theoptimum valves and controls solution to protect thevalue of the production rigorous programme of information managementmeans that the division is able to take a moreanticipatory role in defining the future needs andexpectations of the market by fully utilising theorganisation's critical resources to provide wholeprocess isolation and control valve solutions for theglobal a comprehensive range of engineered valveproducts Weir valves & Controls have developed anextensive global installed base and expertise

7 Acrossa wide range of industry sectors: Power Generation General Industrial Oil & Gas Production Refining Petrochemical Chemical Pulp & Paper Desalination5 Weir valves & ControlsFirst choice for process protectionHopkinsonsPRODUCT Support MANUALWVC-HOP001-R0 Quality assuranceWeir valves & Controls operates qualityprogrammes to cover the full scope of theiractivities. Comprehensive quality systems havebeen developed to serve the power, oil and gas andindustrial markets which they company holds approvals to: ASME Section III N , NPT , NV ASME Section I V ASME Section VIII code UV BS EN ISO 9001.

8 1994 NF EN ISO 9001 API Q1 TO API LICENCES API 6D (6D-0182) and API 6A (6A-0445) API 526 TUV - AD MERKBLATT WRD HP 0 The Quality systems have been approved for thesupply of products to meet the requirements of thePressure Equipment Directive (PED) andcompliance modules A,D1,H,B&D have beenapplied in categories I through IV company is committed to compliance withlegislation and has an established environment andhealth and safety ongoing commitment to customer care is metthrough the process of continuous improvementand the further development of our systems andprocesses towards meeting ISO 9001 testing facilitiesAll pressure containing items are hydrostaticallytested, seat leakage tested and functionally addition, gas, packing emission.

9 Cryogenic andadvanced functional testing can be testing facilities Non-destructive examination by radiography,ultrasonics, magnetic particle and liquid penetrant. Chemical analysis by computer controlled directreading emission spectrometer. Mechanical testing for tensile properties at ambientand elevated temperatures, bend and hardnesstesting. Charpy testing at ambient, elevated andsub-zero technical information can be obtained fromour Web site: valves and Controls manufacture HopkinsonsValves and Boiler Mountings for use on steamraising plant of any size and brand products, renowned for longand dependable service life, can be seen oninstallations ranging from shell boilers for heatingand process Steam up to the highest capacity unitson electricity generating stations.

10 In the nuclear power industry, the Hopkinsonname is synonymous with expertise in the designand production of safety related items such as fastoperating main Steam and main feed Hopkinson range of products also includesvalves for isolation , regulation, pressure relief,instrumentation and drain and specific plantprotection duties on the new generation ofCombined Cycle Gas Turbine Power valves & ControlsFirst choice for process protectionWVC-HOP001-R0 HopkinsonsTHE HOPKINSON STORYB ritannia Works, Huddersfield, UK, the headquarters and mainfactory of Hopkinsons Early History of ValvesThe history of the development of valves containsvery little recorded information, and cannot besaid to have shown much progress beyond themost primitive stages until the beginning of the19th far back as about 230 , Philon of Byzantiumdescribed arrangements for drawing wine fromcasks, corresponding to present-day faucets forremoving beer from barrels, and even mentioned asimple design of a two-way-cock.