| Customization: | Available |
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| After-sales Service: | Warranty |
| Warranty: | 1 Year |
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The threaded retainer plate with knock-off lugs enables fast insert change-out.
The large bearing area on the valve promotes a long service life.
Various insert materials are available to meet standard and high-temperature drilling conditions.
Carbon-steel valve springs are standard, with a long-life, stainless-steel upgrade available.
The key feature of the four-web, center-guided valve is the preloaded polyurethane insert secured with a threaded retainer plate with knock-off lugs for easy disassembly. This design enables drillers to change valve inserts quickly and minimizes downtime. The valve is best suited for low- to medium-pressure drilling operations because of the two-piece assembly of the valve body.
The center-guided design enables the valve flange to be supported under pressure loads by the top of the center-support webs in addition to the seating taper on the inside of the valve seat. This allows for a large bearing area for the valve that minimizes stress and promotes a long service life.
Our standard valve is offered with polyurethane inserts rated for 170° to 180°F (77° to 82°C) drilling-mud temperatures. We also offer a special high-temperature urethane compound as an option for high-temperature drilling conditions to 200°F (93°C) and higher.
| Brand | Type | ||||||
| emsco | F-350 | F-500 | F-650 | F-800 | F-1000 | FA-1300 | FB-1300 |
| FA-1600 | FB-1600 | ||||||
| gardener denver | PZ-7 | PZ-8 | PZ-9 | PZ-10 | PZ-11 | ||
| national | T-800 | T-1000 | T-1300 | T-1600 | |||
| oilwell | A-350 | A-560 | A-650 | A-850 | A-1100 | A-1400 | A-1700 |
| china | 3NB-350 | 3NB-500 | 3NB-800 | 3NB-1000 | 3NB-1300 | 3NB-1600 | 3NB-2200 |
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