Hydraulic adapters and nipples
Male-to-male nipples, reducers, extensions, thread conversion adapters, elbow and tee adapters; BSP, metric, UNF and JIC threads.
When machines from different countries, different threads and different sealing methods come together, the right adapter is what joins the two parts. We measure the thread on both ends on the machine and solve the transition with a single part, without unnecessary intermediate connections. We ship nipples and adapters from stock anywhere in Türkiye and abroad, and also sell them through our online store hidroticaret.com (Turkish).
Types
Male-to-male nipples
Male-male connectors that join two female parts of the same size.
Reducers
Join two connections of different sizes; from the larger size down to the smaller or the reverse.
Extensions
Bring the connection forward; make room for a spanner to reach or for a fitting to come out in a cramped spot.
Thread conversion adapters
Convert between BSP, metric, UNF, JIC and ORFS threads; connect parts of different origin to each other.
Elbow and tee adapters
Adapters that connect directly to the body and turn the line or split it in two; on adjustable types the orientation is set during installation.
JIC adapters
37° cone seat (SAE J514) adapters; common on machines of American origin.
Product images: hidroticaret.com.
How to select
In adapter selection each of the two ends is defined separately: thread type, size and sealing method. One end may be BSP parallel with a sealing washer and the other JIC 37° cone; the adapter must suit both sides.
Every unnecessary intermediate part means one more potential leak point at each joint. Where possible, joining two threads with a single conversion adapter is safer than stacking a reducer on top of a nipple.
A reducer narrows the flow section at the point of transition; because the narrow section is short it usually causes no problem, but it should be avoided in suction lines. Extension nipples lengthen the lever arm, so they should be supported on lines with vibration.
JIC 37° (SAE J514) sizes
| Dash size | Thread | Tube / hose size |
|---|---|---|
| -4 | 7/16-20 UNF | 1/4" |
| -5 | 1/2-20 UNF | 5/16" |
| -6 | 9/16-18 UNF | 3/8" |
| -8 | 3/4-16 UNF | 1/2" |
| -10 | 7/8-14 UNF | 5/8" |
| -12 | 1 1/16-12 UN | 3/4" |
| -16 | 1 5/16-12 UN | 1" |
| -20 | 1 5/8-12 UN | 1 1/4" |
| -24 | 1 7/8-12 UN | 1 1/2" |
In JIC connections the seal is made metal to metal on the 37° cone seat. At the same dash size JIC and ORFS threads are different; they do not fit each other.
Frequently asked questions
Does a reducing nipple weaken the line?
Not in terms of pressure rating; a correctly selected reducer carries the pressure class of the line. It narrows the flow section over a short length and should be avoided in suction lines.
Should I use PTFE tape on a nipple?
On a tapered thread (BSPT, NPT) yes, or a liquid sealant; on a parallel thread (BSP, metric) no, the seal is made by a sealing washer or O-ring.
Can an extension nipple withstand pressure?
Yes, if it is selected for the pressure class of the line. Long extensions are stressed by vibration and need to be supported.
Is there an adapter between JIC and BSP?
Yes. Thread conversion adapters connect JIC, BSP, metric, UNF and ORFS ends to each other.
I do not know the threads on the two ends, what should I do?
Send us a photo of the two parts or the parts themselves; we measure the threads and recommend a one-piece transition.
Stock, sizes and part numbers
Sizes in stock, manufacturer part numbers and brands are kept up to date in our catalog. Send us your requirement on WhatsApp or by e-mail and we will quote and ship worldwide.
Hydraulic adapters and nipples in the catalog Online store (Turkish) →