Overview Reviews Product Description Balcrank 90° Steel Swivel Union. NPT(M) X NPS(F) 1/2” x 1/2”. 3,500 psi (241.13 bar). Product Videos Custom Field Product Reviews Write a Review Write a Review × Balcrank 3270-051 Balcrank 90° Steel Swivel Union Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *