Model: 21791N

Stop Diaphragm Valve

Special Features:

X" in the code denotes actuator spring service p/n 41968

Properties:

Pipe Size Accommodated
1.000 inches all ends
Bonnet Type
Inside screw
Bonnet Attachment Method
Bolted
Maximum Operating Temp
975.0 degrees fahrenheit single response
Minimum Operating Temp
700.0 degrees fahrenheit
End Application
Strategic sealift conversion ships class
Connection Style
Socket all ends
Valve Operation Method
Manual
Connection Type
Unthreaded internal pipe all ends
Maximum Operating Pressure
1400.0 pounds per square inch single response
Material
Stainless steel stem
Material
Steel seat
Material
Steel uns j12072 body
Media For Which Designed
Air single response
Supplementary Features
This item has been reviewed for asbestos material. The current approved source, 35795, has indicated their part number contained asbestos prior to 1984. They continue to manufacture the same part number without asbestos material after 1984
Furnished Items And Quantity
1 nut
NSN
4820-01-433-7203
Part Number
21791N
Description
Valve,diaphragm,stop
CAGE
35795

A valve designed specifically so the diaphragm seals the flow stream from the valve operating mechanism. The flow is controlled by the lifting of the diaphragm from or compressing it against an integral seat. For packless diaphragm valves which utilize a diaphragm as packing and a disk to control the flow, see valve, y.

Part 21791N NSN 4820-01-433-7203

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
13619
FIIG:
A046B0
Concept No.:
1
App. Key:
AC
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Ship Parts

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Schedule B and Export
  • Schedule B: 8481809050
  • SITC: 74780
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Other taps, cocks, valves, etc., nesoi

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