Standard couplings
HFC35 and HFC57
HFC35 and HFC57 are polysulfone quick disconnects with EPDM seals, rated from -40 to 138 °C and from vacuum to 8.6 bar. HFC35 is strong, chemically resistant and autoclavable, while HFC57 uses UV-resistant polysulfone that keeps its performance under continued sun exposure. An efficient valve provides high flow with very low spillage on disconnection. Both series also come as panel mount, with garden hose thread and with a Hastelloy C spring option.
HFC35 and HFC57 by material
Body and seal material as a ready-made filter in this category.
- 83 items
- 1 manufacturer
- Net prices plus VAT
Buying guide
How to choose HFC35 and HFC57
What matters when choosing: properties, comparison and typical applications.
Selection criteria
| Criterion | Specification | Note |
|---|---|---|
| Body | polysulfone (HFC35), UV-resistant polysulfone (HFC57) | HFC57 for outdoor use. |
| Seal | EPDM | |
| Temperature | -40 to 138 °C | |
| Pressure | vacuum to 8.6 bar | |
| Thread | 3/8, 1/2 and 3/4 NPT, BSPT, G thread (BSPP), 3/4 GHT garden hose thread | GHT fits common garden hose connections. |
| Hose connection | hose barb 9.5 to 19.0 mm (3/8" to 3/4") | |
| Design | in-line, panel mount, thread | |
| Spring | Hastelloy C option | For valved versions. |
Frequently asked questions
- What is the difference between HFC35 and HFC57?
- Both are made of polysulfone and share the same operating limits. HFC35 is autoclavable, HFC57 is UV resistant and intended for outdoor lines.
- Which temperatures and pressures are permitted?
- Both series operate from -40 to 138 °C and from vacuum to 8.6 bar.
- Is there a garden hose connection?
- Yes, couplings with 3/4 GHT garden hose thread are part of the series.
- When does the Hastelloy C spring make sense?
- The option offers an alternative spring material for the valved versions. Choose the material to suit your medium.