PartsTable
Technical Data Sheet
D-1994 ✓ 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 PARTS KIT,CHECK VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, power_rating: 600.0 WATTS NOMINAL, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, hardness_rating: 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM BODY, connection_style: SOCKET (PIPE) ALL ENDS, style_designator: STRAIGHT THRU. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-091-4684, 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
D-1994
NSN: 4820-01-091-4684
FSC: 4820
CAGE: 17062 — P J VALVES INC (USA)
SPECIFICATIONS
materialSTEEL
power_rating600.0 WATTS NOMINAL
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
hardness_rating25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM BODY
connection_styleSOCKET (PIPE) ALL ENDS
special_features2-WAY COMBINER; 0.30 DB MAX LOSS; 20 DB MIN. ISOLATION; 0.20 DB MAX. AMPLITUDE BALANCE; 5 DEG MAX. PHASE BALANCE; 1.30:1 MAX. VSWR; N CONNECTORS; INTERNAL 250W TERMINATIONS W
style_designatorSTRAIGHT THRU
mounting_positionHORIZONTAL
operating_pressure275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodWEIGHT
flow_control_deviceDISK
body_inside_diameter1.000 INCHES NOMINAL IN
NSN4820-01-091-4684
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: D-1994 · 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
SEATING SURFACE SHAPE: FLAT
STYLE DESIGNATOR: PLAIN
MATERIAL: STEEL CORROSION RESISTING OVERALL
BODY INSIDE DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORPLAIN
MATERIALSTEEL CORROSION RESISTING OVERALL
BODY INSIDE DIAMETER1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
K-50S2T4Interchangeable
interchangeable cross-reference
interchangeable
4057-77PIECE55Interchangeable
interchangeable cross-reference
interchangeable
A1909Interchangeable
interchangeable cross-reference
interchangeable
D-1994Interchangeable
interchangeable cross-reference
interchangeable
D-1994 SIZE 2INInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18436Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D-1994?
D-1994 is a PARTS KIT,CHECK VALVE.
What parts can replace D-1994?
There are 19 known substitutes for D-1994: K-50S2T4, 4057-77PIECE55, A1909 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D-1994?
D-1994 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-091-4684. This indicates validated use in U.S. government and defense supply chains.
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