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Technical Data Sheet
PartsTable / COMPONENT / C34138
C34138 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER FABRIC REINFORCED, hole_diameter: 0.750 INCHES NOMINAL IN, outside_diameter: 12.875 INCHES NOMINAL IN, style_designator: FLAT, bolt_hole_quantity: 12, material_thickness: 0.128 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-216-9022, 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
C34138
NSN: 4820-00-216-9022
FSC: 4820
CAGE: 86184 — GRISWOLD INDUSTRIES DBA CLA-VAL CO (USA)
SPECIFICATIONS
materialRUBBER FABRIC REINFORCED
hole_diameter0.750 INCHES NOMINAL IN
outside_diameter12.875 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity12
material_thickness0.128 INCHES NOMINAL IN
bolt_circle_diameter11.750 INCHES NOMINAL IN
center_hole_diameter1.125 INCHES NOMINAL IN
NSN4820-00-216-9022
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C34138 · 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: RUBBER FABRIC REINFORCED
•
BOLT CIRCLE DIAMETER: 11.750 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 12
•
HOLE DIAMETER: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
OUTSIDE DIAMETER: 12.875 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.125 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.128 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER FABRIC REINFORCED
BOLT CIRCLE DIAMETER11.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY12
HOLE DIAMETER0.750 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
OUTSIDE DIAMETER12.875 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.125 INCHES NOMINAL IN
MATERIAL THICKNESS0.128 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
1716650Interchangeable
interchangeable cross-reference
interchangeable
P4138BInterchangeable
interchangeable cross-reference
interchangeable
34138Interchangeable
interchangeable cross-reference
interchangeable
341SCZE38Interchangeable
interchangeable cross-reference
interchangeable
47D41350Interchangeable
interchangeable cross-reference
interchangeable
C3-737Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C34138?
C34138 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace C34138?
There are 13 known substitutes for C34138: 1716650, P4138B, 34138 and 10 more. Substitute compatibility should be verified for your specific system.
Is C34138 still available?
C34138 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