A válvula de retenção forjada com castelo aparafusado pertence à classe de válvula automática, também conhecida como válvula de refluxo de válvula unidirecional ou válvula de isolamento, pode abrir e fechar automaticamente os discos dependendo do fluxo do meio para evitar o refluxo do meio. Ela pode ser dividida em válvulas de retenção de giro e válvulas de retenção de elevação. A combinação de válvulas de retenção e globo proporciona isolamento de segurança.

FEATURES
1. Compact and reasonable structure, reliable sealing and excellent performance;
2.Small size and light weight;
3. Wide application range;
4. The valve disc closes quickly and moves sensitively;
5. The closing impact is small and water hammer is not easy to occur;
6. The flow channel is unobstructed and the fluid resistance is small.

APPLICATION CRITERIA
Design: API602/ASME 16.34/BS 5352
Pressure Test: API 598/  EN12266
Flange Ends: ASME B16.5/ EN1092
SW Socket Welding Ends：ASME B16.11
BW Buttwelding Ends: ASME B16.25
NPT Threaded Ends: ASME B1.20.1
Note: End dimension can be manufactured according to customer's requirements.

PRESSURE RATING
CLASS 800
CLASS 1500
CLASS 2500
SPECIFICATION
Size range： 1 / 2 "~ 2" （DN15~DN50）
Pressure Rating: 150LB~2500LB

OPTIONAL MATERIALS
Carbon Steel: ASTM A105, ASTM A350 ASTM LF2
Stainless Steel: ASTM A182 F304, ASTM A182 F304L, ASTM A182 F316, ASTM A182 F316L
Duplex Steel: ASTM A182 F51, ASTM A182 F55,ASTM A182 F53
Alloy Steel: ASTM A182 F1, ASTM A182 F5, ASTM A182 F5A, ASTM A182 F9, ASTM A182 F11, ASTM A182 F22

NOTICE
Do not allow the check valve to bear weight in the piping system. Large check valves should be independently supported to protect them from the pressure generated by the piping system.
Pay attention to the direction of medium flow during installation in the same direction as the arrow marked on the valve body.