API BWA42C Series safety valve with jacket

Performance & Feature:

1. Serviced for equipment of polyester, ethylene, refining asphalt oil and urea which need teat preservation and safety in pressure relief.
2. Heat preservation is for inlet and outlet flange and body and the effect id very well.
3. Balance bellows construction dispels influence of back pressure, prevent spring and parts from eroding.
4. Materials are strictly chosenas medium and temperature by consumers.

Standards Compliance:
Design and Manufacture: API RP 520/ASME VIII
Face to Face(end to end): API 526
Test and Inspection: API 527