Stainless Steel Press Fittings
DN15 – DN108 (1/2″ – 4″) · V & M profile · 200 / 500 psi
Press fittings are crimped onto ASTM A312 stainless steel pipe with a hand-held pressing tool, forming a permanent mechanical interlock — a completely flame-free joint. Sealing elements are factory-fitted; sizes 2½″–4″ include a 420 stainless grip ring plus a PBT spacer ring, with a built-in unpressed-leak indicator. Two systems are offered: 500 psi industrial / fire-protection grade and 200 psi building services / HVAC grade.
STANDARD
ASME B31.1 / B31.3 / B31.9 · NSF 61 / NSF 372
SIZE RANGE
1/2″–4″ · DN15–108
MATERIAL
304 / 304L / 316 / 316L
PRESSURE
200 psi building services · 500 psi industrial
Two System Levels
A 500 psi industrial / fire-protection system and a 200 psi building water / HVAC system — specified by duty.
| Parameter | 500 psi Industrial | 200 psi Building Services |
|---|---|---|
| Max. working pressure | 500 psi / 3447 kPa / 34 bar | 200 psi / 1378 kPa |
| Pipe standard | ASTM A312 (Sch.10S / 5S) | ASTM A312 (Sch.5) |
| Material | 304 / 304L / 316 / 316L | 304 / 316 |
| Size range | 1/2″–2″ / DN15–50 | 1/2″–4″ / DN15–108 |
| Design code | ASME B31.1 / B31.3 / B31.9 | ASME B31.1 / B31.3 / B31.9 |
| Potable water approval | NSF 61 / NSF 372 | NSF 61 / NSF 372 |
Product Range
Six connection families covering 27 standard types, DN15 – DN108 (1/2″ – 4″).
Couplings — Straight & Reducing
8 types
Straight Coupling
Female Coupling
Male Coupling
Reducing Coupling
Female Reducing Coupling
Male Reducing Coupling
Adjustable Coupling
Hex Nipple
Elbows
9 types
90° Elbow
45° Elbow
90° Female Short Elbow
90° Male Elbow
45° Female Elbow
45° Male Elbow
90° Reducing Elbow
90° Elbow with Union
45° Elbow with Union
Tees
5 types
Equal Tee
Female Tee
Male Tee
Reducing Tee
Male Reducing Tee
Unions & Specials
2 types
Union
Pipe Bridge
Flange Adapters
2 types
Flange Plate
Flange Adapter
Caps
1 types
Cap
Technical Data
| Item | Specification |
|---|---|
| Material | 304 / 316 stainless fittings; for use with 316 pipe (ASTM A312, Sch.5 min. wall 0.065″ / 1.7 mm) |
| Size range | 1/2″–4″ (13–108 mm) |
| Working pressure | Up to 200 psi / 1378 kPa (test pressure up to 600 psi); industrial system to 500 psi |
| Low-pressure steam | Up to 15 psi |
| Vacuum | Up to 29.2″ Hg (at 68 °F) |
| Sealing element | EPDM (factory-fitted); 2½″–4″ with 420 stainless grip ring + PBT spacer ring |
| Leak detection | Built-in unpressed-joint indicator — an unpressed joint leaks when pressurised |
Gasket Ratings
| Sealing Element | Material | Temperature Range | Service |
|---|---|---|---|
| Standard (industrial) | HNBR | Up to +98 °C | Process and utility media, including hydrocarbon-laden air |
| Standard (building services) | EPDM | –18 to +121 °C | Potable water, HVAC, compressed air |
| Optional | FKM | –7 to +149 °C | Petroleum and chemical media (up to 160 °C) |
Selection notes
Applications: potable water (softened and demineralised, cooling, heating, recirculating), process chemicals (weak acids and alkalis, hydrocarbons, salt solutions, lubricating and cutting oils), and air and gases (compressed air, instrument air, nitrogen, vacuum, pneumatic conveying). Ball valve Series P569 (316 body, 400 psi) is available to complete the system.
Applications: potable water (softened and demineralised, cooling, heating, recirculating), process chemicals (weak acids and alkalis, hydrocarbons, salt solutions, lubricating and cutting oils), and air and gases (compressed air, instrument air, nitrogen, vacuum, pneumatic conveying). Ball valve Series P569 (316 body, 400 psi) is available to complete the system.
MTC
EN 10204 3.1 mill test certificate with every shipment
Chemical composition and mechanical properties are reported with measured values, with full heat-number traceability back to the original coil certificate.
Frequently Asked Questions
What is the difference between V-profile and M-profile press fittings?
V-profile is the widely used global standard with a V-shaped groove that gives a visible indication after pressing. M-profile uses a trapezoidal shape. We supply both and match the profile to your pressing tooling and local piping standard.
Which sealing materials do you use?
EPDM for potable water and compressed air, silicone for high temperature, and FKM / HNBR for oil, gas and aggressive media. The gasket material is marked on the fitting for traceability.
What sizes are available?
DN15 – DN108 (1/2″ – 4″) across couplings, elbows, tees, caps, unions, threaded adapters and flange adapters.
Do press fittings suit every pipe wall thickness?
Press fittings are engineered for a specific wall-thickness band. We confirm compatibility against your pipe schedule before shipment to avoid leaks and re-pressing on site.
Which system do I need — 500 psi or 200 psi?
The 500 psi system targets industrial and fire-protection service; the 200 psi system covers building potable water and HVAC. Tell us the medium, temperature and design code and we specify the right one.
Request a Quote
A formal quotation lands in your inbox within 12 working hours.
- Quotation with dimension table and material certificates
- MOQ, lead time, packing and Incoterms 2020
- Free samples of standard sizes (courier collect)
- EN 10204 3.1 MTC with every shipment