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the main models and types as follows：
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valves
Tyco Keystone F612 Lug Style Resilient Seated Butterfly Valves
Tyco Keystone F612 Lug Syle Resilient Seated Butterfly Valve Size 350mm
Tyco Keystone F612 Lug Syle Resilient Seated Butterfly Valve Size 400mm
Tyco Keystone F612 Lug Syle Resilient Seated Butterfly Valve Size 450mm
Tyco Keystone F612 Lug Syle Resilient Seated Butterfly Valve Size 500mm
Tyco Keystone F612 Lug Syle Resilient Seated Butterfly Valve Size 600mm
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valve 350mm
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valve 400mm
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valve 450mm
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valve 500mm
Tyco Keystone F611 Wafer Style Resilient Seated Butterfly Valve 600mm
TYCO Butterfly Valve F221/F222
TYCO Butterfly Valve F611/F612
TYCO Butterfly Valve FAR1/FAR2
TYCO Butterfly Valve F990/F991/F992
TYCO Butterfly Valve F14/F16
TYCO Butterfly Valve F129/F239/F139
TYCO Butterfly Valve F17
TYCO Butterfly Valve F15
TYCO Butterfly Valve F631
TYCO Butterfly Valve F56
TYCO Butterfly Valve F633
TYCO High Performance Butterfly Valve K-LOK
TYCO Butterfly Valve F627PQ
TYCO Keystone K-LOK Wafer Butterfly Valve F360
TYCO Keystone K-LOK Full-lug Butterfly Valve F362
TYCO Keystone K-LOK Wafer Butterfly Valve F370
TYCO Keystone K-LOK Full-lug Butterfly Valve F372