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Screw Tips: Ring Valves
Screw Tip - order/quote form. pdf
Specifically engineered to meet the needs of the injection molding industry, EMI Ring Valves meet or exceed OEM specifications.
Need help choosing a valve? Call us at 216-535-4848 and ask to speak to a member of our experienced engineering staff or see
choosing a non-return valve.
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- Free Flow
- Control Flow
- Four Piece
- Interlocking
- Carbide Inserts
Free Flow Ring Valve
This is the only true 100% free-flow ring valve!
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Generous, self-cleaning flow paths minimize residence time, provide excellent screw recovery rates and allow color changes to
be made easily. Highly polished radiused surfaces and an exceptionally non-compressive design make it an excellent
choice when running shear, compression-sensitive, or fiber filled materials. Standard: H-13 tool steel, nitrided.
Optional: 440C stainless steel, CPM 9V tool steel, CPM-T420V stainless steel.
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Control Flow Ring Valve
Excellent all around valve.
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Excellent shut-off capabilities and a compression ratio of approximately
2:1, provide outstanding performance for over 90% of all material
applications. Smooth, wide flow patterns and low compression
allows shear sensitive materials to be run with ease. Standard:
H-13 tool steel, nitrided. Optional: CPM 9V tool steel, stainless
steel or CPM-T420V stainless steel.
When independently tested against five other best selling ring valves,
the Control Flow valve tested at the top in almost all of
the categories tested. Especially outstanding was the cushion
position test with less than .003 inches of deviation.
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Four-Piece Ring Valves
The most reliable and highest quality four-piece valve available.
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#1 in Cushion consistency...Plastics Product Review
#1 in Integral-cavity pressure consistency
#1 in Fill time consistency
#2 in Plastication time consistency
Five generous flow paths for the melt minimize the risk of shear
burning. If the check ring’s front seat begins to wear,
that’s all you have to replace...you’re back
up and running fast without replacing the whole assembly.
For general purpose resins, some engineered and fiber-filled
materials. Good screw recovery rates, fast shut off and
four times the seating area of a ball check, resulting
in more positive seating force. Standard: H-13 tool steel, nitrided.Optional:
CPM 9V front seat, ring and seat hardened to R/C 54-56. |
Interlocking Ring Valves
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EMI’s
Interlocking check ring valve is a great design choice for general-purpose
material applications. Self-cleaning flow paths provide for
quick material changes and the ring rotates with the valve body
to aid in reduction of any possible flute wear during processing. Standard:
H-13 Tool Steel and Nitrided. Optional: CPM-9V tool steel and CPM-420V
Stainless Steel. Consult EMI for assistance in selecting the right
construction for your application. |
Carbide Inserts
Extended life Carbide Insert valves provide many profit boosting benefits.
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Three-piece, four-fluted Carbide Insert valves are made of H-13 and features
carbide inserts at the base of each flute. Inserts protrude
slightly from the flute allowing the inserts to ride against
the ring rather than the flute itself - this has proven to
be extremely effective in preventing wear in this area (95%
of all valve wear is usually seen in the flute area). Note:
Carbide inserts protect only the flute area, however, adhesion
wear (gauling) throughout the valve is usually very minor,
resulting in less than 5% of valve replacement.
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