Part070Plei-Tech® check valve balls are used in pumps to improve pump performance and help pumps operate quietly. Polyurethane is ideally suited for ball check valves because of its outstanding abrasion and chemical resistance. The dynamic performance of Plei-Tech® polyurethanes allow for check valve operation at higher pressure and speeds.

Precision plastic balls from .75″ to 10″ are molded with or without metal inserts, and other polyurethane plastic ball sizes can also be custom molded. Both the urethane and the insert are selected to match performance demands with specific gravity needs. Standard durometers range from 80A to 75D, but softer compounds can be used. Pleiger Plastics Company can either furnish plastic balls “as cast” or “precision ground” for more exacting ball type check valve requirements.

In addition to check valve balls, Pleiger also manufactures and recovers polyurethane check valve ball seats. The use of a polyurethane check valve ball and seat forms a seal that prevents backflow.  The pump’s noise output is also greatly reduced.

Below is a list of common plastic balls and their weight:

Ball Size Chart

Size
(Inch)
Standard Core Size
(Inch)
Ball Weight
Without Core (Grams )
Ball Weight
With Core (Grams)
0.75 4
1.00 10
1.25 0.75 19 43
1.50 1.03 32 95
1.75 1.45 52 226
2.00 1.58 77 301
2.25 1.58 109 334
2.50 1.98 150 599
2.63 1.98 175 623
2.75 2.50 200 1096
3.00 2.69 259 1374
3.25 2.69 330 1445
3.50 2.69 412 1527
4.00 3.60 615 3296
4.25 3.60 738 3419
4.50 3.60 876 3557
4.75 3.60 1030 3711
5.00 3.60 1201 3883
5.13 3.60 1297 3979
5.25 3.60 1391 4072
5.50 4.94 1599 8498
5.90 4.94 1974 8872
6.88 5.91 3129 14987
7.88 5.91 4702 16560
9.75 N/A 8907 N/A

 

Standard Other Hardnesses (80A – 75D)
Hardness 95A Add 40%
Color Black Varies
Tolerances +/- .020″ +/-“.030”
Surface Finish 128 RMS 140 RMS
Quantity
No Core 25 Pieces 1 – 10 add 50%; 11 – 24 add 25%
With Core See Above See Above

All Weights In Grams
.75″ and 1.00″ balls are natural in color, all others as shown above
All Balls are Centerless Ground except 7.88″ and 9.75″ which are cast to size
Other Metric and English Sizes Available, Call For Pricing
All Prices F.O.B. Washington, PA

Balls Product Sheet

Contact Pleiger Plastics today for more information on our polyurethane balls.