Product Details

1. High Strength

Max working pressure: 15000psi (this type is not in the list below, need reservation)

2. API Standard

Designed and manufactured in accordance with the petroleum and natural gas industry standard of People’s Republic of China the upper and lower kelly cock of the rotary equipment on drilling industry (SY/T 5525-2009) and API7-1 standard.

3. Excellent Cost Performance

As an original manufacturer of Kelly Valve, we are sure that we can supply the tool you need in most reasonable price.

Major technical parameters and dimensions:

Spec. of kelly stem mm (in.)	Spec. and dimension of upper rotary box connection and lower rotary PIN connection	Min. bore diameter mm (in.)	Fillet diameter DF mm (in.) ±0.4(1±¹/₆₄)
63.5 (2 ¹/₂)	NC26 (2 ³/₈in. IF)	31.8 (1 ¹/₄ )	83 (3 ¹⁷/₆₄)
76.2 (3)	NC31 (2 ⁷/₈in. IF)	44.4 (1 ³/₄ )	100.4 (3 ⁶¹/₆₄)
88.9 (3 ¹/₂)	NC38 (3 ¹/₂in. IF)	57.2 (2 ¹/₄ )	116.3 (4 ³⁷/₆₄)
108 (4 ¹/₄)	NC46 (4 in. IF)	71.4 (2 ¹³/₁₆ )	145.30 (5 ²³/₃₂)
108 (4 ¹/₄)	NC50 (4 ¹/₂in. IF)	71.4 (2 ¹³/₁₆ )	154 (6 ¹/₁₆)
133.4 (5 ¹/₄)	5 ¹/₂in. FH	82.6 (3 ¹/₄ )	170.7 (6 ²³/₃₂)
133.4 (5 ¹/₄)	NC56	82.6 (3 ¹/₄ )	171 (6 ⁴⁷/₆₄)