Threaded 90 Degree Elbow, Female PT Both Ends
A threaded 90 degree elbow with female PT taper threads on both ends, for a right-angle turn in a threaded pipe run. Shell mold cast in 202, 304 or 316 stainless steel, 1/8″ to 4″, Class 150.
The standard turn in a threaded line.
A stainless steel elbow fitting turns a threaded pipe run through a right angle. This is the standard threaded 90 degree elbow: a female PT thread on both ends, the same size each side, so it joins two male pipe ends at 90°. It is the most used fitting in any threaded line and the one to reach for wherever a run has to change direction in a tight space. Where the line has to go straight into a port, the street elbow with its male end does it without a nipple; where a gentler change of direction with less flow resistance is wanted, the 45 degree elbow takes over.
Ours is shell mold cast in our own plant in Taiwan in 202, 304 or 316 stainless steel and machined after casting. Sizes run 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″ and 4″, with the same size on both ends. The threads are PT taper threads. PT is the Japanese designation for the 55° taper thread that BSPT, R and Rc also describe; it seals on the thread with tape or sealant. It is not the same as NPT, which is a 60° thread and should not be mated with it even where the nominal sizes look alike. If your line is NPT, tell us with the inquiry; NPT is made to order.
The pressure class is 150. On stainless threaded fittings that number is a class designation, not a limit of 150 psi; the working pressure depends on temperature and is set by the fitting standard the class belongs to. For water, air and general fluid lines at ordinary temperatures it carries more than the pipe around it.
A threaded elbow is made to one pattern: long radius and short radius are terms for butt-weld elbows and do not apply here. Choose 304 for water, air and general service, 316 where chlorides are present, and keep the run in one grade. It matches our threaded full coupling, stainless steel hex pipe nipple, pipe cap, pipe cross and pipe union, so one take-off list covers the whole threaded line.
- Model
- FT-90E
- Body
- 202, 304 or 316 stainless steel
- Size range
- 1/8″ to 4″
- Thread
- Female PT (BSPT) taper thread, both ends
- Other threads
- NPT made to order
- Pressure
- Class 150
- Port
- 90° turn, same size both ends
Where it gets used
Every fitting checked for size and thread.
Each fitting is checked for dimensions and thread before shipment.
When do I use a 90 degree elbow instead of a 45?
A 90° elbow makes a right-angle turn in a tight space and is the usual choice for a change of direction. A 45° elbow turns the line more gently with less flow resistance; use it for offsets and gradual routing.
What is the difference between a 90 degree elbow and a street elbow?
This elbow is female on both ends and joins two pipe ends. A street elbow is male on one end and female on the other, so it screws straight into a port without a nipple. Use the street elbow at valves and equipment, this one along the run.
What thread is it?
Female PT taper thread on both ends. PT is the same 55° taper thread as BSPT and Rc. If your line is NPT, tell us with the inquiry; NPT is made to order.
Should I choose 304 or 316?
304 for water, air and general service. 316 where chlorides are present: brine, coastal sites, washdown, most chemicals. Keep the whole threaded run in one grade.
What sizes can I order?
1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″ and 4″, the same size on both ends. Mixed sizes in one order are fine.
Is there a long radius version?
No. Threaded elbows are made to one pattern. Long radius and short radius are terms for butt-weld elbows, not threaded ones. If you need a gentler turn, use two 45° elbows.
