Model: 1221

Stop-check Valve

Properties:

Flow Control Device
Disk
Bonnet Type
Outside screw-yoke
Bonnet Attachment Method
Bolted
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
500.0 degrees fahrenheit single response
Valve Operation Method
Manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Horizontal or vertical
Features Provided
Bonnet packing
Valve Size
2.500 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
7.000 inches all ends
Face To Face Distance
8.500 inches
Thickness
0.875 inches all ends
Bolt Hole Diameter
0.750 inches all ends
Bolt Circle Diameter
5.500 inches all ends
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
4.125 inches all ends
Material
Chromium alloy stem
Material
Cobalt alloy flow control device
Material
Cobalt alloy seat
Material
Steel uns j03002 body
Material Specification
Astm a216 grade wcb assn standard single material response body
Media For Which Designed
Steam single response
Style Designator
Straight through flanged ends
Test Data Document
81349-mil-s-901 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Nondefinitive Specification/std Data
D composition
NSN
4820-00-138-3854
Part Number
1221
Description
Valve,stop-check
CAGE
30263

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also valve (1), lift-check and valve (1), stop-lift-check.

Part 1221 NSN 4820-00-138-3854

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05486
FIIG:
A530B0
Concept No.:
1
App. Key:
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
78.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
A
SPI No.:
SPI Rev.:
SPC Mkg:
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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481302090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of steel

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