NASA/Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135

48 -- CONTROL VALVE AND CARTRIDGE SOL #3-125552 DUE 052199 POC Adele C. Szuhai, Purchasing Agent, Phone (216) 433-8784, Fax (216) 433-2480, Email Adele.C.Szuhai@grc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/GRC/date.html##3-125552. E-MAIL: Adele C. Szuhai, Adele.C.Szuhai@grc.nasa.gov. NASA/GRC plans to issue a Request for Quote (125552) for Page 1 of 4 Item 1- Electro-Hydraulically Actuated Valve Assembly Specifications A. Scope The electro-hydraulically actuated globe valve with servovalve and feedback potentiometer described here-in will be used to throttle an air flow. B. Valve 1. The valve shall have 6 inch flange connections and shall be used for air service in the temperature range of ambient to + 500oF. The environmental temperature will be ambient. 2. The valve shall have a caged trim to reduce noise in the valve. 3. The maximum shutoff differential pressure shall be 1050 psid at the above temperature range. 4. The maximum valve Cv shall be based on an air flow rate of 10.0 pps, a steam flow rate on 6.87 pps, and a water flow rate of 7.03 pps with an inlet pressure of 150 psia, inlet temperature of 311oF, and choked flow (atmospheric pressure downstream of valve). The valve will be installed in a 10 inch, sch 40 pipe and shall have a full open Cv of at least 250 linear. 5. The minimum valve Cv and maximum valve noise level shall be based on an air flow rate of 10.0 pps, a steam flow rate on 5.0 pps, and a water flow rate of 8.9 pps; with an inlet pressure of 900 psia, inlet temperature of 445oF, and choked flow (atmospheric pressure downstream of valve). 6. The body and flanges shall have an ANSI class 900 rating. The valve external leakage shall be zero. 7. The valve shall have linear trim. The valve body shall be designed such that the trim can be easily changed in the field. 8. The valve shall have a minimum rangeability of 50 to 1. 9. The valve seat shall have an ANSI/FCI 70-2 class IV shutoff as a minimum. 10. The valve body and trim shall be 316 stainless steel or stellite. 11. The valve shall have a permanent tag showing: a. maximum working pressure b. maximum operating temperature c. maximum Cv and trim type d. full valve model number and serial number C. Hydraulic Actuator 1. The cylinder shall be a double rod end type with equal area on each side of the piston and shall be sized to meet the valve force requirements. 2. The actuator shall provide full valve travel. 3. The actuator shall be for use with MIL-H-83282 Revision C hydraulic oil at 3000 psig. 4. The actuator shall be shipped with open hydraulic cylinder ports plugged to prevent contamination. 5. The actuator external leakage shall be zero. 6. The leakage across the hydraulic piston shall not exceed 2 cm 3 /hour with 3000 psi pressure difference across the piston. 7. Hydraulic connections shall be in accordance with AND 10050 Revision 19, dated 7-24-84. 8. All hydraulic fittings and metal wetted by the hydraulic fluid shall be 300 series stainless steel or anodized aluminum. 9. The hydraulic cylinder shall have Teflon or viton seals for the piston and piston rod seals. D. Electro-Hydraulic Servovalve 1. Shall be a 2-stage, 4-way modulating servovalve. 2. First stage shall have integral 40 micron hydraulic filter. 3. First stage leakage shall be 0.75 cubic inches per second maximum at 3000 psig supply. 4. Internal leakage shall not exceed 17% for a 1 gpm servovalve, 9% for a 2.5 gpm servovalve, and 7% for a 5 gpm or larger servovalve with 1000 psig supply pressure. 5. External leakage shall be zero. 6. Fluid and ambient temperature range shall be -40oF to 275oF. 7. Shall be suitable for use with MIL-H-83282 Revision C hydrocarbon-type hydraulic fluid at a cleanliness level of NAS 1638 class 5 or equal. Shall have preservative added to increase shell life. 8. Rated servovalve flow at 1000 psid shall stroke control valve +/- 10% full stroke at 10 hz minimum. 9. Servovalve shall have a 4-pin male Bendix or Amphenol electrical receptacle. Servovalve shall be supplied complete with mating electrical connector. 10. Resolution shall be 0.5% maximum of rated current. 11. Hysteresis shall be 3% maximum of rated current. 12. Servovalve shall be suitable for either series or parallel coil connection. 13. Shall be supplied with a calibration chart giving load flow as a function of coil current and frequency plot giving load flow magnitude and phase shift versus input signal current. 14. Shall be able to mechanically adjust to the flow null of the servovalve by +/-20% minimum. Servovalve mechanical null shall not drift during operation. E. Position Feedback Assembly 1. The position feedback shall be provided by a linear potentiometer of an LVDT. If an LVDT is provided the modulation and demodulation electronics shall be provided internal to the LVDT. 2. The position feedback, mounting bracket shall provide zero deflection under all valve operation conditions. 3. The position feedback shaft shall be aligned to prevent excessive loading of the shaft. 4. The position feedback assembly shall be housed in a gasketed sealed enclosure. The feedback device shall be hermatically sealed. The enclosure shall have access for maintenance. All of the leads shall be connected to Jones type terminal strip and then brought out to a MS3102R018S receptacle with mating cable connector. 5. Shall have a minimum continuous adjustment of 10% of the assembly travel relative to the piston rod. 6. The mechanical travel of the feedback assembly shall be at least 110% of the full valve travel. 7. The following shall apply for a linear potentiometer only: a. Shall be a 2 gang linear potentiometer. b. The receptacle shall be provided with connections for the two end taps, center tap, and wiper. The resistance between end taps shall be 5K ohms. c. Shall be a film wound type feedback potentiometer with infinite resolution. 8. The linearity shall be +/- .5% maximum. 9. The backlash shall be 0.1% maximum of full travel. 10. The ambient temperature range shall be -40oF to 200oF. 11. The shaft shall be 300 series stainless steel. F. Documentation 1. Documentation shall include a mechanical drawing with overall dimensions for the valve assembly, and manuals for the feedback potentiometer, actuator, and valve. Included in the manuals, as a minimum, shall be a descriptive information showing an assembled picture of each component and how it operates, and electrical schematics showing how the position feed-back assembly wired to the electrical receptacles. 2. Full documentation shall be provided upon delivery of the valve assembly. Item 2- Noise Cartridge(s) 1. The noise cartridge shall be installed down-steam of the valve specified in item 1 and shall fit between 12 inch 900 LB ANSI Flanges. The cartridge flanges will be provided by the Government. 2. The noise cartridge shall prevent the valve noise from reaching a level that could damage the valve or piping when operating at the conditions specified in B.4, but shall not exceed 115 dba at a distance of 3 feet from the valve. 3. The noise cartridge shall be made of 300 series stainless steel. 4. The noise cartridge shall not increase the required valve Cv by more than 5%. 5. If the noise cartridge is a perforated plate the minimum hole diameter shall be 3/8 inches. (Large diameter holes are required due to mineral deposits caused by the high temperature steam and combustor air exhaust mixture.) This procurement is being conducted under the Simplified Acquisition Procedures (SAP). The Government intends to acquire a commercial item using FAR PART 12. This procurement is a total small business set-aside. See Note 1. The SIC Code and Size Standard are 3494 and 500, respectively. The DPAS Rating for this procurment is DO C9. The anticipated release date of RFQ-#3-125552 is on or about 5-6-99 with an anticipated quote due date of on or about 5-12-99. All qualified responsible sources may submit a quote which shall be considered by the agency. An ombudsman has been appointed -- See Internet Note "B". The solicitation and any documents related to this procurement will be available over the Internet. These documents will be in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The WWW address, or URL of the NASA/GRC Business Opportunities home page is http://procurement.nasa.gov/EPS/GRC/class.html. Prospective offerorsshall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor this site for the release of the solicitation and amendments (if any). Potential quoters will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html. Posted 05/10/99 (D-SN329458). (0130)

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