Komatsu Engine Valve, Valve Guide, Valve Seat

Engine Valves apply to different kinds of materials/special
treatments according to OE specifications as follows:

Material Symbol

W   Chromium-Manganium-Molybdenum-Steel (JIS SCM4) Alloy
    steels applied to inlet valves.
H   Silicon-Chromium (Silchrome 1) (JIS SUH 11) Apply to
    inlet Valve only
A   Silicon-Chromium-Molybdenum-Steel (JIS SUH3) Apply to
    inlet Valves. (May apply to Exhaust Valves of light
    engines)
B   High Chromium-Mangane Austenitic Steel (JIS SUH36)
    (Anti Magnetic Steel 21-4N) Apply to Exhaust Valves of
    heavy duty engines
D   DIN 1.4718(IN)  DIN 1.4882(EX)

Special Treatment Symbol

S   ss Valve seat: Stellite No. 6 or No. 32 (F)
    st Tip: Stellite No. 1
T   Wafer welded valves Small wafer (normally in our
    A-class material) is welded at the valve tip.
C   Chromium plated valve stems
N   Soft nitrided valves Soft nitrided finish, in other
    words "Tufftride", or so called "Black Finish" in
    general.
    The significance of these improvements resulting from
    softnitriding is of course an extended valve life.
Na  Sodium cooled valves demands are increasing for racing
    car engines. For severe operating purposes and for long
    run under high speeds. Sodium affects lowering
    temperature at valve head.
Bi  These are required for some types of engines to
    economically provide a valve with the head resistant to
    heat.
    Corrosion and mechanical stresses and the stem with
    good wear resistance. The bi-metallic valve has the
    head made from a high temperature and corrosion
    resistant steel. And the stem made from steel (usually
    martensitic) with good mechanical properties at medium
    temperatures. This combination is highly recommended
    for Exhaust Valves.

Size: STD

1. Well and High Quality Control
2. Prompt Delivery
3. New Product
4. Customer's Designs and Logos are Welcome
5. Competitive Prices
6. Small Order Acceptable

Plain Packing

Keelung or Kaohsiung

30 ~ 60 Days

Valves, Engine Valves, Auto Parts, Engine Parts, vehicle