PartsTable
Technical Data Sheet
SW1971-2IN ✓ Verified by PartsTable
· GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include material: STEEL UNS K03504 BODY, bonnet_type: OUTSIDE SCREW-YOKE, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET ALL ENDS, special_features: LOOSE DISC; INTEGRAL HARD FACED SEAT; CONVENTIONAL PORT, style_designator: ANGLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-566-1281, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
SW1971-2IN
NSN: 4820-00-566-1281
FSC: 4820
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
materialSTEEL UNS K03504 BODY
bonnet_typeOUTSIDE SCREW-YOKE
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET ALL ENDS
special_featuresLOOSE DISC; INTEGRAL HARD FACED SEAT; CONVENTIONAL PORT
style_designatorANGLE
operating_pressure2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
flow_control_deviceDISK
maximum_operating_temp100.0 FAHRENHEIT SECOND RESPONSE DEGF
valve_operation_methodMANUAL
bonnet_attachment_methodBOLTED
media_for_which_designedSTEAM FIRST RESPONSE
NSN4820-00-566-1281
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: SW1971-2IN · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
MATERIAL: STEEL UNS K03504 BODY
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
BONNET ATTACHMENT METHOD: BOLTED
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
OPERATING PRESSURE: 235.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL UNS K03504 BODY
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
BONNET ATTACHMENT METHODBOLTED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS IN
OPERATING PRESSURE235.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
VALVE OPERATION METHODMANUAL
BONNET TYPEOUTSIDE SCREW-YOKE
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
55-30WInterchangeable
interchangeable cross-reference
interchangeable
SW-1971SS 1.00IN.Interchangeable
interchangeable cross-reference
interchangeable
803-2177525-C12Interchangeable
interchangeable cross-reference
interchangeable
803-2177525Interchangeable
interchangeable cross-reference
interchangeable
MILV22094Interchangeable
interchangeable cross-reference
interchangeable
803-2177525-C4B1AFInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SW1971-2IN?
SW1971-2IN is a HOLDER,ELECTRICAL CONTACT BRUSH.
What parts can replace SW1971-2IN?
There are 8 known substitutes for SW1971-2IN: 55-30W, SW-1971SS 1.00IN., 803-2177525-C12 and 5 more. Substitute compatibility should be verified for your specific system.
Is SW1971-2IN still available?
SW1971-2IN is currently cancelled.
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