QUICK PUMP-IN OVERSHOT
Boart Longyear QUICK PUMP-IN OVERSHOT used for LINK LATCH QUICK PUMP-IN UNDERGROUND HEAD ASSEMBLY
Roschen's overshots are an integral part of the Q Wireline system. Once the inner-tube is full of core, the overshot is lowered (or pumped-in for an inclined-hole) to the bottom of the hole. Its heavy-duty lifting dogs grab a secure hold at the top of the inner-tube assembly.
For maximum productivity in underground or pump-in applications, the Quick Pump-In Overshot provides significantly improved pump-in rates with dual pump-in lip-seals; as well as new 'V-Lip' pump-in seals in NQ and HQ sizes. The variable profile of the 'V-Lip' seal provides improved performance and accommodates both standard wall and V-Wall drill rods when used with the new Roller Latch underground head assembly.
In addition, this overshot incorporates the proven Roschen "Landing Indicator" ball and bushing. The ball and bushing provide a pump-in valve, a bypass valve, and a landing indicator pressure signal.
QUICK PUMP-IN OVERSHOT Available size:
BQ, NQ, HQ, PQ, BQ3, NQ3, HQ3, PQ3
| SIZE |
CORE Ø |
HOLE Ø |
| AQTK |
35.5 mm (1-3/8 in) |
48 mm (1-7/8 in) |
| BQ |
36.4 mm (1-7/16 in) |
60 mm (2-3/8 in) |
| BQTK |
40.7 mm (1-5/8 in) |
60 mm (2-3/8 in) |
| NQ |
47.6 mm (1-7/8 in) |
75.7 mm (3 in) |
| NQTK (NQ2") |
50.6 mm (2 in) |
75.7 mm (3 in) |
| NQ3 |
45 mm (1-3/8 in) |
75.7 mm (3 in) |
| HQ |
63.5 mm (2-1/2 in) |
96 mm (3-3/8 in) |
| HQ3 |
61.1 mm (2-3/8 in) |
96 mm (3-3/8 in) |
| PQ |
85 mm (3-3/8 in) |
122.6 mm (4-7/8 in) |
| PQ3 |
83 mm (3-1/4 in) |
122.6 mm (4-7/8 in) |
FAQ
Q: Are you a manufacturer or trading company ?
A: We are a specialized manufacturer.
Q: How about the delivery terms ?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.
Q: How about discount ?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
