Welch Models 1399, 1400 and 1410 $95.00 Welch Models 1380, 1402, 1403, 1405 8806, 8811, 8816 and 8821 Price: $135.00 Sale: $59.00 Welch Models 1373, 1376 and 8831 Price: $165.00 Sale: $69.00 Welch Models 1374, 1397 and 8851 Price: $165.00 Sale: $74.00 Welch Model 1405* $105.00 Welch Model 1405* $105.00 *IMPORTANT - Welch has recently changed thread sizes on many of their pumps purchased after 2000. If you have questions on your pump model, contact LDS or check your straight thread size listed above.