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Technical Data Sheet
PartsTable / COMPONENT / SW-1971SS 1.00IN.
SW-1971SS 1.00IN. ✓ 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

The SW-1971SS 1.00IN. is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-237-2796, 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
SW-1971SS 1.00IN.
NSN: 4820-01-237-2796
FSC: 4820
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
Part NumberSW-1971SS 1.00IN.
NSN4820-01-237-2796
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SW-1971SS 1.00IN. · 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
•
FEATURES PROVIDED: BONNET PACKING
•
CONNECTION STYLE: SOCKET ALL ENDS
•
MAXIMUM OPERATING TEMP: 1000.0 FAHRENHEIT FIRST RESPONSE DEGF
•
BONNET ATTACHMENT METHOD: BOLTED
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SECOND RESPONSE
•
NOMINAL PIPE SIZE ACCOMMODATED: 1.000 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDBONNET PACKING
CONNECTION STYLESOCKET ALL ENDS
MAXIMUM OPERATING TEMP1000.0 FAHRENHEIT FIRST RESPONSE DEGF
BONNET ATTACHMENT METHODBOLTED
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES ALL ENDS IN
STYLE DESIGNATORANGLE
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
OPERATING PRESSURE234.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MATERIALSTEEL BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
55-30WInterchangeable
interchangeable cross-reference
interchangeable
SW1971-1-2INInterchangeable
interchangeable cross-reference
interchangeable
SW1971-2INInterchangeable
interchangeable cross-reference
interchangeable
SW7971Interchangeable
interchangeable cross-reference
interchangeable
803-2177525-C12Interchangeable
interchangeable cross-reference
interchangeable
803-2177525Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SW-1971SS 1.00IN.?
SW-1971SS 1.00IN. is a SW-1971SS 1.00IN..
What parts can replace SW-1971SS 1.00IN.?
There are 8 known substitutes for SW-1971SS 1.00IN.: 55-30W, SW1971-1-2IN, SW1971-2IN and 5 more. Substitute compatibility should be verified for your specific system.
Is SW-1971SS 1.00IN. still available?
SW-1971SS 1.00IN. is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026