HRVO電動O形切斷球閥適用于兩位切斷、調節的場合。閥與執行機構的連接采用直連方式，電動執行機構內置伺服系統，無須另配伺服放大器，輸入4-20mA信號及220VAC電源即可控制運轉。具有連線簡單，結構緊湊、尺寸小、重量輕、阻力小、動作穩定可靠等優點。執行機構可根據用戶要求另配置UNIC、PSQ、HQ、DHL等型號電子式電動執行機構或GTX、AL等氣活塞式執行機構。

HRVO electric O-off valve for two off, adjust the occasion. Valve and actuator connections using direct connection, built-electric actuator servo system without reprovisioning servo amplifier, the input 4-20mA signal and 220VAC power to control operation. A connection is simple, compact structure, small size, light weight, resistance, stable and reliable. Actuator can be configured according to user requirements other UNIC, PSQ, HQ, DHL and other types of electronic electric actuator or GTX, AL and other gas-piston actuators.

執行標準：
1、設計與制造：GB12237-89、API608、API 6D、JPI 7S-48、BS5351、DIN3357。
2、法蘭尺寸：JB/T74～90（JB74～90）、GB9112～9131、HGJ44～76、SH3406、ANSI B16.5、JIS B2212～2214、NF E29-211、DIN2543。
3、結構長度：GB12221-89、ANSI B16.10、JIS B2002、NF E29-305、DIN3202。
4、檢驗主試驗：JB/T 9092、API 598。

Standard:
1, the design and manufacture: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357.
2, flange size: JB/T74 ~ 90 （JB74 ~ 90）, GB9112 ~ 9131, HGJ44 ~ 76, SH3406, ANSI B16.5, JIS B2212 ~ 2214, NF E29-211, DIN2543.
3, the structure length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.
4 Verify that the primary test: JB / T 9092, API 598.