This series of seal is an all welded construction. The construction conforms to methods as described in the ASME standard B40.2, section 2.3.7 paragraph (C).
Diaphragms with a diameter of 1.375″ (35.92mm) are utilized in this series. Because of the small diameter diaphragm , this seal is applicable to gauge dial sizes no larger than 3 1/2 ” (88.90mm) having pressure ranges no lower than 0-100 PSIG (0.69Mpa) and no higher than 5000 PSIG (34.50Mpa) @ 100F (38C)