T 8012-1 EN Series 240 Types 3241-1 PSA, -7 PSA, -9 PSA ... Control valves for PSA plants (Pressure

download T 8012-1 EN Series 240 Types 3241-1 PSA, -7 PSA, -9 PSA ... Control valves for PSA plants (Pressure

of 14

  • date post

    22-Mar-2020
  • Category

    Documents

  • view

    7
  • download

    0

Embed Size (px)

Transcript of T 8012-1 EN Series 240 Types 3241-1 PSA, -7 PSA, -9 PSA ... Control valves for PSA plants (Pressure

  • T 8012-1 EN

    SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 · samson@samson.de · www.samson.de

    Edition October 2016

    Application Control valves for PSA plants (Pressure Swing Adsorption) Valve sizes NPS ½ to 6 Pressure rating Class 150 to 300 Temperatures –20 to 430 °F (–29 to +220 °C) Standards ANSI, ASME and ASTM

    Series 240 · Types 3241-1 PSA, -7 PSA, -9 PSA Pneumatic Control Valves Type 3241 PSA Globe Valve · ANSI version

    Type 3241 Globe Valve operated with • Type 3271 Pneumatic Actuator (Type 3241-1 Control Valve) • Type 3277 Pneumatic Actuator (Type 3241-7 Control

    Valve) for integral positioner attachment • Type 3275 Pneumatic Piston Actuator (Type 3241-9 Con-

    trol Valve) Valve body made of

    • Cast stainless steel according to ASTM specifications • Forged steel or forged stainless steel • Cast stainless steel

    Undivided valve bonnet Valve plug

    • Soft seal or • High-performance metal seal

    The control valves, designed according to the modular assem- bly principle, can be equipped with various accessories: Positioners, solenoid valves and other accessories according to IEC 60534-6-1 1) and NAMUR recommendation. Refer to Information Sheet u T 8350 for more details.

    Versions Standard version for temperatures ranging from –20 to 430 °F (–29 to 220 °C) – Type 3241-1 PSA (Fig. 1) · NPS ½ to 3 with Type 3271

    Actuator (see Data Sheet u T 8310-1) – Type 3241-7 PSA (Fig. 2 and Fig. 4) · NPS ½ to 3, valve

    in forged steel up to NPS 3, with Type 3277 Actuator for integral positioner attachment (u T 8310-1)

    – Type 3241-9 PSA (Fig. 3) · NPS ½ to 6, with Type 3275 Piston Actuator (u T 8314), for integral attachment of a positioner and/or limit switch

    1) Accessories required. See associated actuator documentation.

    Fig. 1: Type 3241-1 PSA NPS ½ to 3

    Fig. 2: Type 3241-7 PSA NPS ½ to 3

    Fig. 3: Type 3241-9 PSA NPS ½ to 6

    Fig. 4: Type 3241-7 PSA, NPS ½ to 3 forged steel body

    http://www.samson.de/pdf_en/t83500en.pdf http://www.samson.de/pdf_en/t83101en.pdf http://www.samson.de/pdf_en/t83101en.pdf http://www.samson.de/pdf_en/t83140en.pdf

  • 2 T 8012-1 EN

    Fig. 6: Type 3241-9 PSA Control Valve, NPS ½ to 6 with Type 3275 Pneumatic Piston Actuator

    Fig. 7: Type 3241-1 PSA Valve in forged steel, NPS ½ to 3

    Further versions – Flow divider for noise reduction in both directions of flow – DIN version · See Data Sheet u T 8015-1 – Versions with dimensions according to Japanese Industry

    Standard (JIS) · Details on request

    Principle of operation The process medium flows through the valve in both direc- tions. The valve plug position determines the cross-sectional area between the seat and plug.

    Fail-safe position Depending on how the springs are arranged in the Type 3271 or Type 3277 Actuator (u T 8310-1), the valve has two dif- ferent fail-safe positions effective upon air supply failure: Actuator stem extends (fail-close) The valve closes when the supply air fails. Actuator stem retracts (fail-open) The valve opens when the supply air fails. The double-acting Type 3275 Piston Actuator does not have a fail-safe action (see u T 8314).

    Fig. 5, Fig. 6 and Fig. 7 show configuration examples

    Fig. 5: Type 3241 PSA Valve, NPS ½ to 6 with flow divider ST 1 PSA

    http://www.samson.de/pdf_en/t80151en.pdf http://www.samson.de/pdf_en/t83101en.pdf http://www.samson.de/pdf_en/t83140en.pdf

  • T 8012-1 EN 3

    Table 1: Technical data for Type 3241 PSA Valve

    Valve size NPS ½ to 6 ½, 1, 1½, 2, 3 ½ to 6 ½, 1, 1½, 2, 3

    ASTM material A216 WCC A105 A351 CF8M A182 F316

    Type of end connections Flange Flange Flange Flange

    Flange type RF 1) RF 1) RF 1) RF 1)

    Pressure rating (ANSI Class) 150/300 300 150/300 300

    Seat/plug seal Soft seal or high-performance metal seal

    Characteristic Equal percentage or linear

    Rangeability 50:1 for NPS ½ to 2 · 30:1 for NPS 2½ to 6

    Compliance ·

    Temperature ranges in °C (°F) · Permissible operating pressures acc. to pressure-temperature diagram (see Information Sheet u T 8000-2)

    Valve –29 to 220 °C (–20 to 430 °F)

    Leakage class according to ANSI/FCI 70-2

    Valve plug Soft seal VI

    High-performance metal seal V

    1) Other versions on request

    Table 2: Materials

    Standard version

    Valve body 1) Cast steel A216 WCC Forged steel

    A105 Cast stainless steel

    A351 CF8M Forged stainless steel

    A182 F316

    Valve bonnet A105 A105 A182 F316 A182 F316

    Seat and plug 1.4006 1.4006 1.4404 1.4404

    Seal ring for soft-seated plug: PTFE with glass fiber

    Guide bushings 1.4104 1.4104 1.4404 1.4404

    Packing V-ring packing: PTFE with carbon · Spring: 1.4310 · Stem protective ring

    Body gasket Graphite on metal core

    1) Refer to pressure-temperature diagram, other materials available on request

    http://www.samson.de/pdf_en/t80002en.pdf

  • 4 T 8012-1 EN

    Table 3: CV and KVS coefficients

    Table 3.1: Overview (with flow divider ST 1 PSA (CV I, KVS I))

    CV 2 3 5 7.5 12 20 30 47 70 75 95 120 190 300

    KVS 1.6 2.5 4.0 6.3 10 16 25 40 60 63 80 100 160 260

    CV 1 1.5 2.3 3.7 6 9.5 15 23 37 56 60 75 95 145 245

    KVS 1 1.3 2 3.2 5 8 13 20 32 48 50 63 80 125 210

    Seat ØD

    in 0.47 0.47 0.47 0.945 0.945 1.22 1.5 1.9 2.48 2.48 3.15 3.15 3.94 5.12

    mm 12 12 12 24 24 31 38 48 63 63 80 80 100 130

    Travel in 0.59 0.59 0.59 0.59 0.59 0.59 0.59 0.59 0.59 1.18 0.59 1.18 1.18 1.18

    mm 15 15 15 15 15 15 15 15 15 30 15 30 30 30

    Table 3.2: Versions without flow divider

    CV 2 3 5 7.5 12 20 30 47 70 75 95 120 190 300

    KVS 1.6 2.5 4.0 6.3 10 16 25 40 60 63 80 100 160 260

    Valve size NPS/DN

    ½ 15 • • •

    ¾ 20 • • •

    1 25 • • •

    1½ 40 • • •

    2 50 • • •

    2½ 65 • • •

    3 80 • • •

    4 100 • • •

    6 150 • • •

    Table 3.3: Versions with flow divider ST 1 PSA (CV I, KVS I) · Versions with cast bodies only

    CV 1 1.5 2.3 3.7 6 9.5 15 23 37 56 60 75 95 145 245

    KVS 1 1.3 2 3.2 5 8 13 20 32 48 50 63 80 125 210

    Valve size NPS/DN

    ½ 15 • • •

    ¾ 20 • • •

    1 25 • • • •

    1½ 40 • • • •

    2 50 • • •

    2½ 65 • • •

    3 80 • • •

    4 100 • • •

    6 150 • • •

    Terms for control valve sizing according to IEC 60534, Parts 2-1 and 2-2: FL = 0.95, XT = 0.75 Conversion of flow coefficients: CV (US gallons/min.) = KV (m³/h)/0.865

  • T 8012-1 EN 5

    Notes on the differential pressure tables The differential pressure tables have been prepared under the following conditions: – The maximum permissible supply pressure is 4 bar (60 psi) for valves in sizes NPS ½ to 2 and actuators with an effective dia-

    phragm area of 700 cm² – Process medium in flow-to-open direction – Version with PTFE packing – The leakage rates specified in Table 1 are not exceeded with the maximum differential pressures specified. – The specified differential pressure may be restricted by the pressure-temperature diagram.

    Table 4: Differential pressure tables for Type 3271 and Type 3277 Actuators with Type 3241 PSA Valve Permissible differential pressures Δp for unbalanced plug with high-performance metal seal when p2 = 0 – Values specified in the gray-shaded columns correspond to the standard application cases, i.e. operation with rated travel – Differential pressures specified in the white columns apply to maximum pretensioned springs – Values in parentheses are valid for 50 % travel.

    Table 4.1: Fail-close valve · Pressures in bar

    Bench range (bar) with actuator

    240 cm²

    0.2 to 1.0

    0.3 to 1.1 0.4 to 2.0

    (1.2 to 2.0)

    0.6 to 2.2 0.6 to 3.0 1) (1.8 to 3.0)

    0.9 to 3.3 – –

    120 cm² 350 cm² 700 cm²

    0.4 to 1.2 0.8 to 2.4 1.2 to 3.6 1.4 to 2.3 (1.85 to

    2.3)

    2.1 to 3.3 (2.7 to 3.3)

    Required supply pressure (bar) 1.2 1.4 2.2 2.6 3.2 3.8 2.5 3.5

    Valve size NPS CV

    Actuator cm² Δp when p2 = 0 bar

    ½ to 1

    2 120 – – 28 – – – 50 –

    3 240 28 47 50 50 50 50 – –

    5 350 45 50 50 50 50 – 50 –

    ¾ to 1½

    7.5 120 – – – – – – 30 46

    240 – – 14.8 24 24 39 – –

    12 350 – – 24 38 38 50 50 50

    700 – – (50) – – – – –

    1 and 2 20

    240 – – – 14 14 23 – –

    350 – 13.5 13.5 30 22 47 50 50

    700 – – (50) – (50) – – –

    1½ to 2½ 30 350 – – – 20 14 31 37 50

    700 – – (50) – (50) – – –

    2 to 3 47 350 – – – 12 8.5 19 23 35

    700 – – (50) – (50) – – –

    2½ and 3 70 700 – – (23) – (35) – (36) (50)

    3 95 700 – – 1.4 – (21) – (22) (33)

    1) Not for actuator with 120 cm² (18.6 in²) diaphragm area

  • 6 T 8012-1 EN

    Table 4.2: Fail-close valve · Pressures in psi

    Bench range (psi) with actuator

    240 cm²

    3 to 15

    4 to 17 6 to 30

    (18 to 30)

    9 to 32 9 to 44 1) (26 to 44)

    13 to 48 – –