Drill Pipe Float Valve, Size 4F (4-1/2″ FH)
Size 4F drill pipe float valve for 4-1/2″ API FH and 4″ API IF float subs. Model G (flapper) from Forum and Baker; valve OD 3-21/32 in.
Key features
- Valve Type: Drill pipe float valve — flapper
- Nominal Size: 4F
- End Connection (Inlet): Fits float / bit sub: 4-1/2″ API FH and 4″ API IF
- Valve Type
- Drill pipe float valve — flapper
- Nominal Size
- 4F
Product description
A size 4F drill pipe float valve sits in the float sub or bit sub above the bit and stops drilling fluid and cuttings flowing back up the string when circulation stops, when connections are made, and in a kick. Size 4F fits subs cut with a 4-1/2″ API FH and 4″ API IF connection. We supply it new in Model G (flapper) from Forum and Baker.
Makes and models in this size
| Make | Model | Type | Part / cage no. |
|---|---|---|---|
| Baker | Model G | Flapper | — |
| Forum | Model G | Flapper | — |
Part numbers are as cast on the valve cage or listed by the maker. Baker-pattern valves of the same size and model interchange in the same sub.
Models
- Model G (flapper): Full-opening flapper that swings clear of the bore, for abrasive fluids and unrestricted flow.
Dimensions
| Valve outside diameter (D) | 3-21/32 in |
|---|---|
| Recess diameter in the sub (R = D + 1/32) | 3-11/16 in |
| Valve length (L) | 12 in |
| Baffle plate recess diameter (T) | 3-1/4 in |
| Valve bore, Model F | 2-1/2 in |
| Valve bore, Model G | 2-3/16 in |
Models F and G share the same outside dimensions, so either fits the same float sub or bored-out drill collar.
Float sub connections
| Connection | Typical sub OD |
|---|---|
| 4-1/2″ API FH | 5-3/4″ |
| 4″ API IF | 5-3/4″ |
Running notes
- Forum rates its Model F and G valves at 7,500 psi working pressure; we confirm the rating of other makes on the quotation.
- If more than one float valve runs in the same string, space them apart.
- Choose a ported model (FA or GA) when you need to read shut-in drill pipe pressure or want the string to fill partly while running in.
Ordering
Give the size, model and sub connection on your RFQ, and say whether you need the float sub or bit sub as well. We confirm lead time and documentation on the quotation.
Identification
| Parameter | Value |
|---|---|
| Valve Type | Drill pipe float valve — flapper |
| Models available | Model G (flapper) |
| Makes | Forum, Baker |
Dimensions
| Parameter | Value |
|---|---|
| Nominal Size | 4F |
| End Connection (Inlet) | Fits float / bit sub: 4-1/2″ API FH and 4″ API IF |
| Bore Type | Model G 2-3/16 in |
| Valve OD (D) | 3-21/32 in |
| Sub recess diameter (R) | 3-11/16 in |
| Valve length (L) | 12 in |
| Baffle plate recess (T) | 3-1/4 in |
Performance
| Parameter | Value |
|---|---|
| Rated working pressure | 7,500 psi (Forum Model F and G) |
Shipping & lead time
What is the difference between Model F, FA, G and GA?▾
Which sub connection takes a size 4F float valve?▾
How long is a size 4F float valve?▾
Can a Model F and a Model G run in the same sub?▾
What pressure are drill pipe float valves rated to?▾
Are these float valves supplied new?▾
Shipped worldwide from our Dubai warehouse. Transit, routes and documentation for 126 destinations
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