Daniel™ Senior™ Orifice Fitting

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Technical Guide May 2014 Daniel Senior Orifice Fitting ™ ™ Differential Pressure Flow Meters Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 1…

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Technical Guide May 2014 Daniel Senior Orifice Fitting ™ ™ Differential Pressure Flow Meters Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 1 3/12/14 2:12 PM Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 2 3/12/14 2:12 PM Differential Pressure Flow Meters Technical Guide Proving its worth every day Overview Typical Applications The Daniel Senior Orifice Fitting is a dual-chamber device that ƒƒ Gas transmission / pipeline reigns as the most widely used means of measurement for ƒƒ Gas distribution natural gas. With an installed base of well over one million ƒƒ Offshore gas production and onshore, including shale orifice fittings worldwide, more natural gas is measured with ƒƒ Gas plants The Daniel Senior Orifice Fitting than any other type of device. ƒƒ Floating Production, Storage and Offloading (FPSO) The Senior Orifice Fitting (Figure 1) saves users time and ƒƒ CO2 injection money by providing a fast, safe and extremely simple method of changing orifice plates under pressure without ƒƒ Bi-directional high pressure storage flow interruption, preventing unscheduled shutdowns. In addition, its dual-chamber design eliminates the need for costly Features and Benefits piping bypasses or additional valves and fittings required with ƒƒ Highly reliable, time proven technology conventional orifice flange installations. ƒƒ Field-repairable, reducing downtime and costs The Senior Orifice Fitting meets all requirements and associated with shipping to a repair site recommendations for accurate flow measurement of gas ƒƒ Available in compliance with ISO-5167, PED, NORSOK and liquid, including AGA-3 / API 14.3 requirements, without and other code standards / requirements (1) compromise. ƒƒ Corrosion resistant and other special casting materials, From duplex stainless steel fittings to carbon steel and severe including Wrought Carbon Steel (WCC, WCB), Low Temperature Carbon Steel (LCC), 316 Stainless Steel service trims (Monel, Hastellloy-C and Alloy-20), Daniel delivers and Duplex, makes this fitting suitable for sour gas fittings to meet the stringent requirements of corrosive service and other special applications environments or specific temperature and pressure needs. ƒƒ Slide valve / isolation mechanism featuring a metal-to- The Senior Orifice Fitting requires no beta ratio range metal seat (hard seat(2)) with injected lubricant / restrictions and no added uncertainty to published values. It sealant is standard on all Daniel Senior Orifice is available in 2 through 48 flange line sizes, up to ANSI 2500, Fittings, providing an optimal seal in the production and 10,000 psi (68958 kPa) in 3 to 6 only. environment where particulate matter is common ƒƒ Optional soft seat slide valve(3) (O-ring seal without lubricant) is available in 2 to 12 sizes, up to 600 ANSI, for use with gas products such as ethylene Figure 1: Daniel Senior Orifice Fitting (1) Please consult Daniel factory for severe service and other code requirements, including low -temp, high H2S, high CO2, and special applications. (2) Hard-seat using injected grease / sealant is recommended for production applications where sand, grit and other particulate matter is present. (3) Soft-seat, greaseless seal is not recommended / intended for production applications where sand, grit and other particulate matter is commonly present (e.g., shale gas production). www.EmersonProcess.com 1 Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 1 3/12/14 2:12 PM Senior Orifice Fitting Mar 2014 Operational Sequence of Removing an Orifice Plate Under Pressure (1) A. Under flow conditions B. Equalize pressure 1. Open equalizer valve C. Raise orifice plate D. Bleed upper chamber and lubricate valve seat 2. Open slide valve carrier (isolation mechanism) 4. Close slide valve carrier (isolation mechanism) 3. Raise plate to upper chamber 5. Close equalizer valve and inject sealant 6. Open bleeder valve (blow-down valve) (1) CAUTION: This operational sequence is representational only and is not intended for use as a field guide to operations. NOTICE: See operation manual and always read and follow the detailed operating instructions provided with each fitting before attempting to operate. 2 www.EmersonProcess.com Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 2 3/12/14 2:12 PM Differential Pressure Flow Meters Technical Guide Top Chamber Valve Seat Sealing Surface Valve Seat Gasket Slide Valve Seat Slide Valve Strip Stop Pin Slide Valve Springs Slide Valve Carrier Operating shaft and Pinion E. Remove orifice plate The slide valve seat and the slide valve strip are field-replaceable 7. Remove clamping bar, sealing bar, and gasket or repairable (re-lapping) without removing the fitting from the 8. Remove orifice plate from top chamber line, reducing downtime. Senior Orifice Fitting Front View www.EmersonProcess.com 3 Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 3 3/12/14 2:12 PM Senior Orifice Fitting Mar 2014 Standard Specifications (1) Differential Pressure Taps Indicator Plates Internal Tap Hole Sizes Standard on all Senior Orifice Fittings, the indicator plate clearly ƒƒ In accordance with API 14.3 (AGA Report #3) shows the direction of the open and closed position of the slide ƒƒ In accordance with ISO-5167 (option) valve. 1/2 NPT Process Connection (Standard) Operating Wrench ƒƒ In accordance with API 14.3 (standard for all) An operating wrench is provided with each fitting for safe ƒƒ Flanged differential taps (option) operation of the shaft and pinions, equalizer valve, grease gun, Telemetering Taps bleeder valve and clamping bar screws. ƒƒ Standard on all 2 to 12 inch 600 ANSI ƒƒ Available on all other sizes and ANSI classes Hydrostatic Testing All Daniel Senior Orifice Fittings are hydrostatically tested to 1.5 Line Bore Tolerances times operating pressure. ƒƒ 2 and 3 sizes, ± .003 ƒƒ 4 , 6 , 8 , 10 sizes, ± .004 Trim ƒƒ 12 and 16 , ± .005 ƒƒ NACE Trim (MR-0175-2002) 2 to 8 150 to 600 ANSI RFFN Fittings (Standard) Operating Shafts ƒƒ A-trim 10 + and all ANSI classes 900+ (Standard) ƒƒ Stainless Steel, double-ended (standard) ƒƒ Other optional trims available for severe service ▪▪ Eliminates the need to reverse shafts in the field and other code requirements (High H2S, High CO2, NORSOK, Daniel “AASG” and special applications) Application Temperature Maximum Temperatures(2) ƒƒ 150 to 900 ANSI, -20°F to +450°F(2) (-29°C to 232°C) ƒƒ 1500 and 2500 ANSI, -20°F to +275°F (2) (-29°C to 135°C) Senior Orifice Fitting - Flanged Configuration Senior Orifice Fitting - Flangnek Configuration TM (1) Please consult Daniel if your requirements are outside the specifications. Other product and material offerings may be available depending on the application. (2) Orifice Plate Seal used may limit the service temperatures and special trims will be required for high temperature applications. Maximum temperature is contingent on limited pressure. Please consult factory. 4 www.EmersonProcess.com Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 4 3/12/14 2:12 PM Differential Pressure Flow Meters Technical Guide Special Features High Pressure Fittings Double row clamping bar screws Thin section on internal edge Heavy weight section on external (constraining force directly over for flexible lip seal, yielding edge to prevent compression drift gasket) easily to pressure between joints Robust Carbon Steel clamping and sealing bars Constant pressure seals Force exerted on gasket at all times surface tending to change its shape will not affect gasket seal Daniel Sealing Bar Gasket Alloy steel studs Corrosion resistant slide valve seat Heavy wall sections Oversized stuffing box units Figure 2: Partial Side Sectional Elevation Daniel ANSI 1500 and 2500(1) Fittings Figure 2 shows the extra-heavy construction of the wall sections and essential parts on the ANSI 1500 Senior Orifice Fitting. All seal ring units for use in 900 to 2500 ANSI fittings are required to be Snap Seal or PTFE Seal Rings. 36 inch ANSI 600 Senior Orifice Fitting (1) NOTE: Body / Top Gasket peroxide-cured Nitrile O-ring for ANSI 1500 Orifice Fittings. Male and female gasket joint with Parker seal gaskets for ANSI 2500 Orifice TM Fitting. www.EmersonProcess.com 5 Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 5 3/12/14 2:12 PM Senior Orifice Fitting Mar 2014 Alignment of Meter Tube Flange to Orifice Fitting Flange On all sizes, 300 ANSI or under, three dowel pin flange- alignment holes are drilled in the flanges. Meter Tube Flange Fitting Flange On Daniel 400 ANSI fittings or higher, flanges are manufactured with close-tolerance, square-shouldered, large male flange-facing on fitting, and large female flange-facing on meter tube to assure proper internal alignment. Flange gaskets are precision-cut so they will not, under compression, extend into the internal bore of fitting. Refer to Figure 3. Daniel 125 to 300 ANSI Daniel 400 and Higher ANSI Figure 3: Method of Aligning Meter Tube Flange to Orifice Fitting Flange Slide Valve (1) Continuous Grease Groove (Encircle Valve Opening) Top Chamber Equalizer Passageways Grease Gun (Part No. 23) Equalizer Valve (part No. 1) Slide Valve Seat (Part No. 18) Slide Valve Strip (Part No. 3) Slide Valve Carrier (Part No. 17) Clearance pad prevents slide valve Lower Compartment from being closed until plate carrier is fully centered in the line. Figure 4: Slide Valve / Isolation Mechanism(2) In Daniel Senior Orifice Fittings, the slide valve seat (Part No. 18) then equalized throughout the entire fitting by operation of is part of the upper chamber. The slide valve strip (Part No.3) the equalizer valve (Part No. 1). Equalized pressure on both moves underneath this seat, thereby utilizing line pressure to sides of the slide valve strip allows slide valve to move freely affect a positive seal. The slide valve strip is maintained in the without wear. The metal-to-metal hard seat seal (with injected “floating” position by minimum spring pressure. sealant / lubricant) provides an optimal and reliable seal in the production environment where sand and particulate matter are Before the slide valve (Figure 4) is opened, sealant (lubricant) common. is injected using the grease gun (Part No. 23). Pressure is (1) CAUTION: This view is representational only and is not intended for use as a field guide to operations. NOTICE: See operation manual and always read and follow the detailed operating instructions provided with each fitting before attempting to operate. (2) Slide valve / Isolation mechanism does not comply with or adhere to API 598 valve criteria. Hard seat (using sealant / lubricant) is standard on all Daniel Senior Orifice Fittings.Soft seat (O-ring seal using no grease) is available in size 2 to 12 up to 600 ANSI. Not intended for production applications. 6 www.EmersonProcess.com Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 6 3/12/14 2:12 PM Differential Pressure Flow Meters Technical Guide Plate Alignment The plate carriers in all 2 to 8 Senior Orifice Fittings are wrench. This method provides the safest means of operation centered using a fixed three-point positioning system. This with the least amount of effort and assures positive control of assures orifice plate concentricity in accordance with current API the plate carrier at all times(1). 14.3 (AGA Report #3) tolerances while the fitting is positioned All parts, including the essential slide valve assembly, may be in the vertical and horizontal planes. replaced or repaired without removing the fitting from the line. The Senior Orifice Fitting is composed of two independent compartments separated by a hardened stainless steel slide valve. The side sectional view, Figure 5, demonstrates the slide valve in theclosed position and orifice plate concentric in line of flow. The slide valve cannot be closed unless the orifice plate is concentric to the bore of the fitting or in the upper chamber during plate removal. Figure 6 demonstrates the Daniel top chamber in the opened position with the plate carrier in place for change or inspection of the orifice plate. Only a few turns of the operating wrench are required to loosen screws to remove or replace clamping and sealing bars. Set screws always remain in the clamping bar. Figure 5: Side Sectional Figure 6: Daniel Senior This feature adds greatly to speed and ease of operation. View of Daniel Senior Orifice Fitting - Top Orifice Fitting Chamber Open The plate carrier is raised and lowered by a double rack and pinion mechanism with power applied through an operating The Senior Orifice Fitting Advantage Orifice Plate Sealing Units Compact Design Designed by Daniel, the plate sealing units provide a secure The compact design of the Senior Orifice Fitting requires seal between orifice plate and body seats and can be used for a minimum operating space. variety of services. Fittings Plate Carrier Daniel Senior Orifice Fittings up to and including 12 line size The plate carrier protects orifice plate at all times while can operate in a vertical down flow condition or positioned in inserting or removing from the fitting and can be easily inserted horizontal flow for side opening. while fitting is rolled in the horizontal position. All fittings are designed and manufactured to meet API / AGA recommendations, and in strict accordance with A.S.T.M. Indicator Plate specifications. For other code requirements and special The indicator plate clearly shows the position of the slide valve applications, including NORSOK, ISO, PED, CO2, H2S, low within the fitting. temperature, please consult factory. PTFE Shaft Packing and Centering Rings The PTFE shaft packing and centering rings are standard equipment on all Daniel Senior Orifice Fittings in all sizes and ratings. (1) CAUTION: This is not intended for use as a field guide to operations. NOTICE: See operation manual and always read and follow the detailed operating instructions provided with each fitting before attempting to operate. www.EmersonProcess.com 7 Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 7 3/12/14 2:12 PM Senior Orifice Fitting Mar 2014 Orifice Plate Sealing Units Orifice plates manufactured by Daniel are quality-controlled from the selection of raw materials to packaging of finished products. The orifice plate sealing unit provides a seal between orifice plate and body seats and it is available for a variety of services. Dual Seal (DSC) Snap Seal Ring (SSR) The Dual Seal (DSC) is the most simple and practical orifice The Snap Seal Ring (SSR) unit is a removable orifice plate holder plate sealing device for normal flowing streams. It is precision designed for use where elastomer seal swelling is a problem. molded from 70-80 shore nitrile synthetic rubber(1) and Certain media, such as ethylene or carbon dioxide may cause provides four rubber-to-metal sealing surfaces 360° around seal swelling when other types of seal units are removed from the plate. The units securely seal against both outer faces of high-pressure service. the plate and against both seats of the orifice fitting to prevent The Snap Seal Ring unit consists of two symmetrical metal leakage. rings, each one having an O-ring on both sides for a secure In 16 sizes and up, DS seal rings are not available. The Dual seal on the plate side and the fitting side of the ring. The Vulcanized Seal (DVS) is bonded from 80-90 shore rubber orifice plate is centered and secured between these rings. The directly to the outer edge of the orifice plate at the factory. assembled unit provides a full 360° rubber-to-metal seal around If damaged, the DVS seal and plate may be returned to the both sides even in the absence of pressure differential. factory for revulcanizing. The DSC and DVS seals are used in No special tools are required for assembly or disassembly. Daniel fittings sizes up to ANSI 600, in temperatures from -20°F When ordering, please specify nominal line size, schedule, plate to +275°F. thickness, and flowing media or material choice. Dual Seal (DSC) in 2 to 8 , (DS) in 10 to 12 Snap Seal Ring (SSRC) in 2 to 8 , (SSR) in 10 to 24 Materials Materials ƒƒ 2 to 10 : 70-80 shore nitrile synthetic rubber(1) ƒƒ 316 stainless steel ƒƒ 12 and up: 80-90 shore rubber ƒƒ Zinc-plated carbon steel Operating Temperature ƒƒ Duplex and Inconel available ƒƒ -20°F to +275°F Operating Temperature Available Sizes ƒƒ -20°F to +275°F (standard O-rings) ƒƒ 2 to 12 ƒƒ -67°F to +437°F (FKM Fluoroelastomer O-rings)(2) ANSI Available Sizes ƒƒ Up to 600 ƒƒ 2 to 24 ANSI ƒƒ 900, 1500 and 2500 (1) Also available in FKM Fluoroelastomor. (2) FKM is the designation for a class of fluoroelastomers as defined in ASTM D1418 and ISO 1629. 8 www.EmersonProcess.com Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 8 3/12/14 2:12 PM Differential Pressure Flow Meters Technical Guide PTFE Seal (TSC) Metal Seal (MSC)(3) The PTFE Seal (TSC) is a superior orifice plate seal unit for The Metal Seal (MSC) is a stainless or zinc-plated carbon steel difficult, corrosive flows and for higher temperatures than the clip-ring assembly recommended for high pressures and for Dual Seal (DSC) unit can handle. The TSC has proven effective in temperatures up to 1200°F(4). The assembly consists of an flows such as dilute sulphuric acid, fuming nitric acid, hydrazine, upstream and a downstream ring. The upstream ring has a liquid oxygen and other unusual flows, from -65°F to +500°F(1). recessed groove into which a thin leaf-spring is inserted. A seal is created by clamping the plate between the rings, thereby The two-piece unit consists of an inlet ring which fits around the providing the necessary compression to seat the plate against plate outer diameter, and a downstream ring fitted with metal the downstream ring. clips for assembling the orifice plate sealing unit. A unique and an annular groove(2) on the ring provides compression to Metal Seal units of zinc-plated carbon steel are recommended effectively seal off the plate. for services to +600°F(4), standard 316 stainless steel units to +1000°F(4), and 316 stainless steel units with an inconel spring The TSC unit can be assembled or taken apart by hand and is to +1200°F(4). interchangeable in 2 to 10 sizes with Daniel Dual (DSC) and Metal (MSC) Seal units. The TSC is recommended with Daniel The Metal Seal unit can be assembled or taken apart by hand 900, 1500 and 2500 ANSI fittings or lower pressure where and is interchangeable in 2 to 12 sizes with Dual Seal (DSC) and rubber seals may not be satisfactory. PTFE Seal (TSC) units. PTFE Seal (TSC) in 2 to 8 , (TS) in 10 to 24 Metal Seal (MSC) in 2 to 8 , (MS) in 10 to 24 Materials Materials ƒƒ PTFE Seal (900, 1500 and 2500) ƒƒ 316 stainless steel seal (standard) Operating Temperature ƒƒ Zinc-plated carbon steel seal ƒƒ -65°F to +500°F Operating Temperature(1) Available Sizes ƒƒ 450°F (316 stainless steel) standard ƒƒ 2 to 10 ƒƒ 450°F (316 stainless steel) with an inconel spring ANSI ƒƒ 450°F (zinc-plated carbon steel) ƒƒ 900, 1500 and 2500 Available Sizes ƒƒ 2 to 24 ANSI ƒƒ 900, 1500 and 2500 (1) For higher temperatures, please consult factory. (2) This groove should be spread by inserting a tool such as a screw driver and rotating 360° to re-engage the spring lip after each use. NOTICE: See operation manual and always read and follow the detailed operating instructions provided with each fitting before attempting to operate. (3) Not intended for custody transfer accuracy applications. (4) Application temperatures above 450°F are intended for single chamber devices and require factory consultation. www.EmersonProcess.com 9 Daniel-Senior-Orifice-Fitting_Tech-Guide_FINAL_Mar-2014.indd 9 3/12/14 2:12 PM Senior Orifice Fitting Mar 2014 Orifice Plate Carrier Daniel’s new plate carrier reduces measurement uncertainty The new plate carrier is compatible with Daniel Senior Orifice using a th
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