Bulletin 71.1:95 November 2009 95 Series Industrial Pressure Regulators W1894-1 / IL W1894-1 / IL TYPE 95LD TYPE 95HD W6195 / IL TYPE 95LD (FLANGED) W5091 / IL W5092 / IL TYPE 95L TYPE 95H D100117X012 Figure 1. 95 Series Pressure Reducing Regulators www.fisherregulators.com

Bulletin 71.1:95 Introduction The 95 Series regulators are compact, large-capacity, direct-operated pressure regulators (see Figures 1 and 2). The units are available in NPS 1/4 through 2 (DN 15 through 50) sizes and are offered in several different end connection configurations. They are designed to handle pressures up to 600 psig (41,4 bar) and temperatures up to 650°F (343°C). This product can help solve the toughest pressure control applications. Typical applications include superheated steam, steam injection, steam tracing, nitrogen purging, boiler feed water, process chemicals, cooling...

Available Configurations Type 95L: Low-pressure regulator for 2 to 30 psig Type 95H: High-pressure regulator for 5 to 150 psig Type 95LD: Low-pressure differential regulator for pressures with handwheel and packing box Type 95HD: High-pressure differential regulator for pressures with handwheel and packing box Type 95HP: High-pressure regulator for 15 to 400 psig (1,0 to 27,6 bar) outlet pressures Type 95HT: High-pressure/high temperature regulator for 15 to 300 psig (1,0 to 20,7 bar) outlet pressures (metal seat) and up to 650°F (343°C) Body and Orifice Sizes NPT, ASME flanged; all sizes are...

Bulletin 71.1:95 Specifications (continued) Shutoff Classification Per ANSI/FCI 70-3-2004 Metal Seats: Class IV PTFE: Class lV Elastomer Seats: Class VI or better Flow and Sizing Coefficients See Table 4 Pressure Connections See Figure 4 Construction Materials See Table 6 Common Services and Material Compatibility See Table 7 Approximate Weights 95H Series NPS 1/4 body: 4 pounds (2 kg) NPS 1/2 (DN 15) body: 8 pounds (4 kg) NPS 3/4 and 1 (DN 20 and 25) bodies: 20 pounds (9 kg) NPS 1-1/2 and 2 bodies (DN 40 and 50): 73 pounds (33 kg) 95L Series NPS 1/4 body: 6 pounds (3 kg) NPS 1/2 (DN 15) body:...

Bulletin 71.1:95 HANDWHEEL CONTROL SPRING UPPER SPRING SEAT metal diaphragms (key 12) SPRING (key 11) ELASTOMER DIAPHRAGM GASKETS (key 19) ORIFICE TYPE 95HD WITH TWO METAL DIAPHRAGMS (EXCEPT ONLY TYPE 95HD, NPS 1/4, 2 TO 6 PSI (0,14 to 0,41 bar) RANGE) VALVE PLUG GUIDE INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE M1006 TYPE 95HD WITH ELASTOMER SEAT AND DIAPHRAGM (ALSO TYPICAL OF TYPE 95LD) Figure 2. 95 Series Operational Schematic (continued) air flow in Nm3/h 53,6 20 107 161 214 268 322 375 429 482 536 1,4 1,2 16 1,1 14 0,97 200 psig (13,8 bar) at inlet 12 10 0,69 100 psig (6,9 bar) at inlet...

Bulletin 71.1:95 Table 1. Sizing Types 95HD and 95LD Pressure Regulators steps 1.  Determine service conditions. 2.  Select type number and spring range    using Tables 3 and 5. 3.  Using the Fisher® Sizing Program,    calculate Cg from data given in the capacity tables. Use the table inlet pressure closest to the service condition. Also calculate using the table outlet pressure which is closest to the spring bias. 4.  Use the information in Step 3 to calculate    Cg using the Fisher Sizing Program. 5.  Calculate flow for application based upon    actual conditions and calculated Cg. EXAMPLE...

Table 4. Flow and Sizing Coefficients for all 95 Series Regulators Table 5. Body Sizes and Pressure Ranges

Table 6. Construction Materials Trim Materials:

Table 7. Compatibility (continued) Universal NACE Compliance Optional materials are available for applications handling sour gases. These constructions comply with the recommendations of NACE International sour service standards. The manufacturing processes and materials used by Emerson assure that all products specified for sour gas service comply with the chemical, physical, and metallurgical requirements of NACE MR0175 ISO and/or NACE MR0103. Customers have the responsibility to specify correct materials. Environmental limitations may apply and shall be Capacity Data The capacity information...

Bulletin 71.1:95   3.  For a given body size and inlet pressure, find the      capacity Qa for P2a and Qb for P2b.   4.  Use the following formula to determine the      interpolated capacity (Q). Qb - Qa P2b - P2a = Qb - Q P2b - P2 Example: P1 = 100 psig (6,9 bar) NPS 1/4 Type 95H with 15 to 30 psig (1,0 to 2,1 bar) spring range P2 = 20 psig (1,4 bar) Determine air capacity, Q. Solution: Qa = 1100 SCFH (29,5 Nm3/h) P2a = 15 psig (1,0 bar) Qb = 1600 SCFH (42,9 Nm3/h) P2b = 30 psig (2,1 bar) 1600 - 1100 30 - 15 = = 1600 - Q 30 - 20 42,9 - Q 2,1 - 1,4 Q = 34,0 Nm3/h Then, if capacity is desired...

To determine wide-open flow capacity for relief valve sizing of steam, use the equation for critical pressure drops (absolute outlet pressure equal to one-half or less than one-half absolute inlet pressure). Q = Steam flow, pounds/h P-i(abs) = Absolute inlet pressure, psia (add 14.7 psi to gauge inlet pressure to obtain absolute inlet pressure) Cs = Wide-open steam sizing coefficient from Table 4 For pressure drops lower than critical (absolute outlet pressure greater than one-half absolute inlet pressure), use the sizing nomographs in Fisher Catalog 10, or the Fisher Sizing Program. Table 8....

Table 8. Air SCFH (Nm3/h) Capacities^) for NPS 1/4 through 1 (DN 25) Types 95L and 95LD Regulators with Elastomer Diaphragm (continued)

Table 9. Air SCFH (Nm3/h) Capacities^) for NPS 1/4 through 1/2 (DN 15) Types 95H and 95HD Regulators with Elastomer Diaphragm

Table 9. Air SCFH (Nm3/h) Capacities^) for NPS 3/4 through 1 (DN 20 through 25) Types 95H and 95HD Regulators with Elastomer Diaphragm (continued)

Table 10. Air SCFH (Nm3/h) Capacities for NPS 1-1/2 through 2 (DN 40 through 50) Types 95H and 95HD Regulators with Either Elastomer or Stainless Steel Diaphragm

Table 11. AirSCFH (Nm3/h) Capacities for NPS 1/4 through 1/2 (DN 15) Type 95HP Regulators with Elastomer Diaphragms^)