求翻译：Válvula De retención, tipo Duo-Check, Diámetro 4", ANSI 600, cubierta ASTM A216 WCB, extremos bridados RF-SF según norma ASME B16.5, TRIM Acero inox. 316, diseñada y construida según API 6D. Probada según la norma API-607 cuarta edición.是什么意思？

Valve retention, Duo -Check type , Diameter 4 " ANSI 600, ASTM A216 WCB covered , RF- SF flanged ends according to ASME B16.5 , TRIM Stainless Steel . 316 , designed and built according to API 6D . Tested according to standard

Check Valve, type Duo-Check , Diameter 4 ", 600 ANSI, ASTM A216 cover WCB, extreme RF flange head cap screw-SF according to the standard ASME B16.5, stainless steel TRIM. 316, Designed and built according to API 6D. Tested according to the standard API-607 fourth edition.

Valve Of retention, Pair type, Diameter 4 ", ANSI 600, cover ASTM A216 WCB, bridados ends RF-SF according to norm ASME B16.5, TRIM Steel inox. 316, designed and constructed according to API 6D. Proven according to norm API-607 fourth edition.

Check valve, type Duo-Check, diameter 4 ", ANSI 600, cover ASTM A216 WCB, RF-SF flanged ends according to ASME B16.5, TRIM steel inox. 316, designed and built according to API 6 d. Tested according to API 607 4th Edition.

Valvula de retencion， tipo 二重唱检查， Diametro 4”， ANSI 600， cubierta ASTM A216 WCB， extremos bridados RF-SF segun 诺玛 ASME B16.5，整齐的 Acero inox。316， disenada y construida segun API 6D。Probada segun la 诺玛 API-607 cuarta edicion。