|
HOW TO PLACE INQUIRY |
|||
|
(A) (B) (C) (D) (E) (A)
FLAT (B)
FLAT-RECESSED (C)
DOME (D)
TULIP (E)
SEMI-TULIP |
(1) CIRCULAR GROOVE
(2) 2 CIRCULAR GROOVES
(3) 3 CIRCULAR GROOVES
(4) 4 CIRCULAR GROOVES
(5) CIRCULAR/RING GROOVE |
(6) TAPERGROOVE
(7) REVERSE TAPER GROOVE
(8) DOUBLE TAPER GROOVE
(9) TAPER/RING GROOVE
(10)PARALLEL/TAPER GROOVE |
|
|
(11)
NARROW GROOVE
(12)
PARALLEL GROOVE
(13)
PARALLEL/RING GROOVE
(14)
RING GROOVE
(15)
DRILL HOLE |
D = HEAD DIAMETER d =
STEM DIAMETER |
|
|
MATERIAL SPECIFICATION
EN 18 D NS LOW ALLOY CHROMIUM STEEL For Inlet Valves
(40
Cr 4)
EN 52 SC HIGH ALLOY SILICON CHROMIUM
STEEL
For High Stress Inlet & Low Stress Exhaust Valves
SUH.3 JIS HIGH ALOY SILICON CHROMIUM STEEL
Heat
Resistant Valve Steel
EN 59 XB HIGH ALLOY SILICON CHROMIUM NICKEL STEEL
(x 80 Cr 20 Si 2 Ni 1) For High Stress Exhaust Valves
21 – 4 N
(x 53 Cr 22 Mn 9 Ni 4 N) TF HIGH ALLOY CHROMIUM NICKEL NITROGEN
AUSTENITIC STELL
21 – 12 N for
High Strength Valves
(x 20 Cr 21 Ni 12 N) TH HIGH
ALLOY CHROMIUM NICKEL NITROGEN AUSTENITIC STEEL
For High Strength Valves.
SUH.38 JIS HIGH
ALLOY SILICON CHROMIUM NICKEL STEEL
Heat Resistant Valves Steel.
BM FRICTION
WELDED TWO PIECE VALVE CONSISTING HIGH ALLOY
AUSTENITIC
HEAD AND LOW ALLOY STEM
PROCESS CODE
SS SEAT HARD FACED WITH GRADE 6 STELLITE
SAS SEAT
HARD FACED WITH Ni60 DEPOSIT
ST TAPPET END HARDENED WITH GRADE 12
STELLITE
WT WELD
BUTTON ON TAPPET END
CF HARD
CHROMIUM FLASH ON VALVE STEM
TUF TUFFRIDING
P PHOSPHATING ON NS MATERIAL
ENGINE VALVES
SPECIAL TO CUSTOMER’S NEED
1.
Bi
Metallic Valves
2.
Chrome
plated Valves
3.
Induction
Hardened Valves
4.
Nitrided/Tufftrided
Valves
5.
Phosphated
Valves
6.
Smooth
Rolled Valves
7.
Stellite
Hardfaced Valves