PartsTable
Technical Data Sheet
4171M2B ✓ 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

ROLLER,GOVERNOR WEIGHT,STEAM TUR. Key specifications include material: STEEL COMP 303 FLOW CONTROL DEVICE, bonnet_type: INSIDE SCREW, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-246-3030, 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
4171M2B
NSN: 4820-00-246-3030
FSC: 4820
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL COMP 303 FLOW CONTROL DEVICE
bonnet_typeINSIDE SCREW
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
nominal_thread_size0.125 INCHES ALL ENDS IN
maximum_operating_temp300.0 FAHRENHEIT SECOND RESPONSE DEGF
valve_operation_methodMANUAL
bonnet_attachment_methodINTEGRAL
NSN4820-00-246-3030
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 4171M2B · 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
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
MATERIAL: COPPER ALLOY SEAT
MAXIMUM OPERATING TEMP: 300.0 FAHRENHEIT SECOND RESPONSE DEGF
BONNET TYPE: INSIDE SCREW
STYLE DESIGNATOR: STRAIGHT THRU
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
MATERIALCOPPER ALLOY SEAT
MAXIMUM OPERATING TEMP300.0 FAHRENHEIT SECOND RESPONSE DEGF
MATERIALCOPPER ALLOY BODY
BONNET TYPEINSIDE SCREW
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
MATERIALSTEEL COMP 303 FLOW CONTROL DEVICE
BONNET ATTACHMENT METHODINTEGRAL
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
A431PCN709Interchangeable
interchangeable cross-reference
interchangeable
BK709Interchangeable
interchangeable cross-reference
interchangeable
A431Interchangeable
interchangeable cross-reference
interchangeable
13623Interchangeable
interchangeable cross-reference
interchangeable
451487Interchangeable
interchangeable cross-reference
interchangeable
H4171M2BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4171M2B?
4171M2B is a ROLLER,GOVERNOR WEIGHT,STEAM TUR.
What parts can replace 4171M2B?
There are 11 known substitutes for 4171M2B: A431PCN709, BK709, A431 and 8 more. Substitute compatibility should be verified for your specific system.
Is 4171M2B still available?
4171M2B is currently cancelled.
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