• Long Trim Life—NotchFlo DST control valves feature a protected seat design whereby the shutoff function is separate from the throttling areas of the trim.
• Class V Shutoff—Use of hardened metal seats provides tight shutoff to minimize seat erosion.
• High Pressure Drops—Rugged cage guiding of the plug, combined with a staged pressure drop, enables the NotchFlo DST control valve to be effective in a wide range of allowable high pressure drop applications. It can be operated by either spring and diaphragm or piston actuators, depending on plug design (balanced or unbalanced) and application requirements.
• Sour Service Capability—Materials are available for applications handling sour fluids. All references in this document are for NACE MR0175-2002 unless otherwise noted. Contact your Emerson Process ManagementTM sales office for information on NACE MR0175/ISO 15156 and NACE MR0103.
• Availability—NotchFlo DST control valves are available in both globe and angle valve body designs.

Note
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use and maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end-user.

• Trim 277—Trim 277 is the standard trim for carbon steel and alloy steel valve bodies and recommended for general and severe service applications up to 316°C (600°F). See tables 4 and 5 for operating temperature ranges per valve size. Typical applications for Trim 277 include services in boiler feedwater, water, non-sour hydrocarbons, and other non-sour liquids.
• Trim 278—Trim 278 is the standard trim for stainless steel valve bodies and is optional for use in carbon steel and alloy steel valve bodies. Trim 278 is recommended for use in moderately corrosive liquid applications. Trim 278 can be used up to 316°C (600°F). See tables 4 and 5 for operating temperature ranges per valve size. Not suitable for boiler feedwater use if amine problems exist.
• Trim 278N—Trim 278N should be used for sour liquid service in carbon steel, alloy steel, and stainless steel valve bodies. Trim 278N complies with the requirements of NACE MR0175-2002. Trim 278N can be used up to 316°C (600°F). See tables 4 and 5 for operating temperature ranges per valve size. Not suitable for boiler feedwater use if amine problems exist.
• Trim 279—Trim 279 is available with CL600 3-stage control valves only and should be used for sour liquid service in carbon steel, alloy steel, and stainless steel valve bodies. Trim 279 complies with the requirements of NACE MR0175-2002. Trim 279 can be used up to 316°C (600°F). See table 4 for operating temperature ranges per valve size. Not suitable for boiler feedwater use if amine problems exist.
• Trim 280—Trim 280 is available with CL1500 ≥ NPS 6 and CL2500 control valves only and should be used in SA105 steel valve bodies. Trim 280 can be used up to 316°C (600°F). See table 5 for operating temperature ranges per valve size. Typical applications for Trim 280 include services in boiler feedwater, water, non-sour hydrocarbons, and other non-sour liquids.
• Trim 281—Trim 281 is available with CL1500 ≥ NPS 6 and CL2500 control valves only and should be used in SA105 NACE steel valve bodies. Trim 281 complies with the requirements of NACE MR0175-2002. Trim 281 can be used up to 316°C (600°F). See table 5 for operating temperature ranges per valve size. Not suitable for boiler feedwater if amine problems exist.
• Trim 282—Trim 282 is available with CL1500 ≥ NPS 6 and CL2500 control valves only and should be used in 316 stainless steel valve bodies. Trim 282 complies with the requirements of NACE MR0175-2002. Trim 282 can be used up to 316°C (600°F). See table 5 for operating temperature ranges per valve size. Not suitable for boiler feedwater if amine problems exist.
• Trim 283—Trim 283 is available with CL1500 ≥ NPS 6 and CL2500 control valves only and should be used in 347 stainless steel valve bodies. Trim 283 complies with the requirements of NACE MR0175-2002. Trim 283 can be used up to 316°C (600°F). See table 5 for operating temperature ranges per valve size. Not suitable for boiler feedwater if amine problems exist.

Application Information

1. Process liquid—State particle size and type of entrained impurities, if any.
2. Specific gravity of liquid
3. Temperature and vapor pressure of liquid
4. Critical pressure
5. Range of flowing inlet pressures
6. Pressure drops

Valve Body Information

To determine what information is needed for ordering the valve body and trim, refer to the Specifications section. Review the description at the right of each specification or in the referenced tables, figures, and bulletins, and indicate the desired choice wherever a selection is to be made.

Available Valves

CL600 3-Stage: Level C only
CL900 and CL1500 ≤ NPS 4, 4-Stage: Levels A, B, and C
CL1500 ≥ NPS 6, 4-Stage and CL2500 6-Stage: Level C only

Valve Sizes and End Connection Styles

CL600 3-Stage: See table 1 CL900 and CL1500 ≤ NPS 4, 4-Stage: See table 2 CL1500 ≥ NPS 6, 4-Stage and CL2500, 6-Stage: See
table 3

Shutoff Classification

Class V: [5x10-12m3/sec/bar/mm of port diameter (0.0005 mL/min/psid/in) of water at service pressure drop] per ANSI/FCI 70-2 and IEC 60534-4

Maximum Inlet Pressures and Temperatures(1)

Consistent with applicable CL600, CL900, CL1500, and CL2500 pressure/temperature ratings according to ASME B16.34 unless limited by individual temperature limits shown in tables 4, 5, 6, 8, 9, or 10

Maximum Pressure Drop(1)

See table 7

Construction Materials

Valve Body and Bonnet:
CL600, CL900, and CL1500: ■WCC steel, ■WC9 Cr-Mo steel, ■CF8M SST, and ■LCC for low temperature service
CL600 only: ■Duplex SST ASME SA995 CD3MN, FMS 20B70
CL1500 ≥ NPS 6 and CL2500 only: ■SA105, ■F316, and ■F347
Valve Plug: ■S44004 SST (440C SST), ■S41000 SST (NACE) (410 SST), or ■Alloy 6 (CL600 only), ■S31600 with CoCr-A (CL1500 ≥ NPS 6 and CL2500 only), or ■S34700 with CoCr-A (CL1500 ≥ NPS 6 and CL2500 only)
Seat Ring: ■S44004 SST (440C SST), ■S31600 SST with hardface (NACE) (316 SST), or ■Alloy 6 (CL600 only), or ■S34700 with CoCr-A (CL1500 ≥ NPS 6 and CL2500 only)
Cage: ■S17400 SST with H900 heat- treat condition, ■S17400 H1150 DBL (NACE), or ■Alloy 6 (CL600 only), ■S17400 SST with H1075 heat-treat (CL1500 ≥ NPS 6 and CL2500 only), or ■S20910/CR PL (CL1500 ≥ NPS 6 and CL2500 only)
Other Parts: See table 9

Temperature Capabilities(1)

3-Stage, 4-Stage, and 6-Stage: See tables 4, 5, 6, 8, 9, and 10 Valve Body/Trim Combinations: See tables 4, 5, and 6 Bolting for Sour Applications: See table 10
(CL600 -- 3-Stage only). For all other valve pressure ratings, contact your Emerson Process Management sales office
All Other Parts: See table 9

Flow Coefficients

See tables 22, 23, and 24

Flow Characteristic

Linear

Flow Direction

Flow up

Port Diameter, Travel, Stem, Yoke Boss Diameters, Unbalance Area

See tables 19, 20, and 21

Minimum Seating Force

Use Class V seat load requirements (refer to Catalog 14)

Noise Level

Use Fisher liquid noise prediction methods available in the Fisher sizing program

Bonnet Style

Plain Bonnet: See figures 4, 5, 6, and 7

Packing Arrangements

Standard Material: Single PTFE V-ring
Optional Material: See table 9

Approximate Weights

See table 11

Dimensions

Globe Valve CL600, CL900, and CL1500: See tables 12, 13, 14, and 15 Angle Valve CL600: Contact your Emerson Process Management sales office
Angle Valve CL900 and CL1500 ≤ NPS 4: See tables 16 and 17 Angle Valve CL1500 ≥ NPS 6 and CL2500: See table 18

Note
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use and maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end-user.