Model: H-993

Safety Relief Valve

Special Features:

Operating pressure 20.7 mpa; crack pressure 0.689 mpa to 1.034 mpa; temperature 219.26k to 408.15k; threaded internal tube 9/16-18 unjf-3a; length 35.56 mm

Properties:

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
G46d plain (screw-in cartridge) all ends
Valve Operation Method
Automatic
Connection Type
Threaded cartridge all ends
Adjustable Pressure Range
+100.0/+150.0 pounds per square inch
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.562 inches all ends
Material
Stainless steel flow control device
Material
Stainless steel seat
Media For Which Designed
Oil, hydraulic single response
Thread Series Designator
Unjf all ends
NSN
4820-01-107-4261
Part Number
H-993
Description
Valve,safety Relief
CAGE
06239

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Part H-993 NSN 4820-01-107-4261

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
Concept No.:
1
App. Key:
AP
Cond. Code:
1
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:
069100
UFC:
21275
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481400000
  • SITC: 74740
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Safety or relief valves

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