DIN 3852-02 type B is a ISO 228-1 BSPP thread under DIN standard,which is called ISO 1179-4 under ISO standard.
DIN 3852-02 type B creates a seal by means of a sharp “cutting face” at the base of the male thread that cuts into the flats or “spotface” surrounding the port when the fitting is threaded and tightened.
Cutting Face Type B is available in BSPP (ISO 1179-4).Look for a raised outer section on the male fitting where the bonded washer or seal would go; if it exists this indicates the fitting is cutting face.
ISO 1179-1:2013 specifies dimensions for ports with ISO 228‑1 threads for use with non-adjustable stud ends described in ISO 1179‑2, ISO 1179‑3 and ISO 1179‑4 and with adjustable stud ends described in ISO 1179‑3.
Ports in accordance with ISO 1179-1:2013 are applicable for use with ISO 1179‑2 heavy-duty (S series) stud ends with type E sealing at working pressures up to 63 MPa (630 bar) and light-duty (L series) stud ends at working pressures up to 25 MPa (250 bar), ISO 1179‑3 light-duty (L series) stud ends with type G sealing at working pressures up to 31,5 MPa (315 bar), and with ISO 1179‑3 light-duty (L series) adjustable stud ends with type H sealing at working pressures up to 20 MPa (200 bar), and ISO 1179‑4 stud ends with type B sealing at working pressures up to 40 MPa (400 bar) for the S series, up to 25 MPa (250 bar) for the L series, and up to 10 MPa (100 bar) for the LL series, except for the G2 size port, which in hydraulic fluid power systems is used mainly with accumulators and for which ISO 1179‑3 and ISO 1179‑4 do not specify stud ends. The permissible working pressure depends upon size, materials, design, working conditions, application, etc.
The main difference between DIN 3852-2 and ISO 1179-1 as follow:
- DIN 3852-2 creates a seal by cutting face.
- ISO 1179-1 creates a seal by elastmometric seal(FKM or NBR)
QC Hydraulics manufactures stainless steel BSPP thread fittings with DIN 3852-2 and ISO 1179-1 available,, please feel free to contact our sales teams for more details.