NS-23812 - 2-3/8" X 12" 1.780 SEATING NIPPLE API
NS-27812 - 2-7/8" X 12" 2.280 SEATING NIPPLE API
NSN-27812 - 2-7/8" X 12" 2.250 SEATING NIPPLE NON API
Pump seating nipples are furnished in 12" lengths and all standard sizes with upset or non-upset tubing threads which conform to API specifications.
Special threads may be ordered. Pump seating nipples are ordinarily furnished with tubing threads. Nipples with working barrel threads must be specified.
V Threads are not recommended for lifting.