1900 Standard Series - Allied Valve Inc

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Materials (Contd.)1900 Liquid Trim (LA) Option1900 Liquid Trim (LA) Safety Relief ValveDisc HolderDisc RetainerDiscAdjusting RingNozzleStandard Material for 1900 LiquidTrim (LA) Safety Relief ValvesPart Name Materials 1Nozzle316 Stainless SteelDisc316 Stainless SteelDisc RetainerInconel X750Disc Holder316 Stainless SteelGuide316 Stainless SteelAdjusting Ring316 Stainless SteelNotes:1. Balance of materials same as 1900 standardconstruction.1900.28 | Dresser Consolidated ®
Materials (Contd.)1900 Special Material & Service OptionsThe 1900 Flanged Series offers various material options to satisfy customer needs and API standards. The most common optionsare listed in this section.These material options are not the only available options however. Inquire of Dresser Measurement for options not listed here.Specify the material construction classification using the construction variations such as: S2, H4, etc.Options included are:Page Number• Sour Gas Service (SG1, SG10, SG5 and SG15) 1900.29• Hydrofluoric Acid Service (HA) 1900.31• Stainless Steel (S2, S3 and S4) 1900.32• Alloy 20 (A1, A2, A3 and A4) 1900.34• Monel (M1, M1½(MB), M2, M3 and M4) 1900.35• Hastelloy C (H1, H2, H3 and H4) 1900.36• Duplex (D1, D2, D3 and D4) 1900.37• Low Temperature - Process Fluid (L1, L2, and L3) (For media temperatures to -450°F or -268°C) 1900.39• Low Temperature - Ambient (C1 and C2) (For ambient temperatures to -50°F or -45.6°C) 1900.40• High Temperature (T1 & T2) (For media temperatures to 1500°F or 816°C) 1900.41• Lethal Service 1900.42• O-Ring Selection 1900.43Many other special options are available not necessarily of a material nature. These include, but are not limited to, specialfacings on connections or special connections. Contact the factory for any special requirements you may have.1900 Sour Gas (SG) TrimsMaterial requirements of NACE Standard MR0103-2003 areapplicable to systems handling sour gas if the total operatingpressure of the system is 65 psia or greater and if the partialpressure of H2S in the gas is 0.05 psia or greater.The SG10 (non-bellows) and SG15 (bellows) materialselections are satisfactory for applications in which the valvesecondary pressure (outlet side) does not exceed 65 psia (50psig (3.45 barg)). Under valve relieving conditions, 50 psig(3.45 barg) secondary pressure would not normally beexceeded until the valve set pressure exceeds 450 psig(31.03 barg).The SG1 (non-bellows) and SG5 (bellows) material selectionscomply with NACE standard MR0103-2003.Specific applications may be referred to the factory forrecommendations.1900 Series Safety Relief Valve | 1900.29
Page 1: Pressure Relief Valves1900 Standard
Page 4 and 5: Conversion TableAll the USCS values
Page 6 and 7: Scope of Design1900 Series Overview
Page 8 and 9: Scope of Design (Contd.)1900 Series
Page 10 and 11: Scope of Design (Contd.)1900 Series
Page 12 and 13: Scope of Design (Contd.)How Pressur
Page 14 and 15: Scope of Design (Contd.)Product Fea
Page 16 and 17: Scope of Design (Contd.)1900 Steam
Page 18 and 19: Scope of Design (Contd.)1900 Restri
Page 20 and 21: Scope of Design (Contd.)1900 Soft S
Page 22 and 23: MaterialsConventional SRV 1900 Seri
Page 24 and 25: Materials (Contd.)Conventional SRV
Page 26 and 27: Materials (Contd.)Conventional SRV
Page 28 and 29: Materials (Contd.)1900 Soft Seat (D
Page 32 and 33: Materials (Contd.)1900 Sour Gas (SG
Page 34 and 35: Materials (Contd.)Corrosive Service
Page 42 and 43: Materials (Contd.)Low Temperature (
Page 44 and 45: Materials (Contd.)1900 Valves for L
Page 46 and 47: Materials (Contd.)O-Ring Selection
Page 48 and 49: Accessories (Contd.)1900 Caps, Leve
Page 50 and 51: Accessories (Contd.)Bolted CapConso
Page 52 and 53: Accessories (Contd.)Cap and Lever C
Page 54 and 55: Dimensions & Weights1900 Flanged Se
Page 56 and 57: Dimensions & Weights (Contd.)ValveT
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Valve Configuration CodeMATERIAL CL
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1900 Standard Series - Allied Valve Inc

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