Circle Valve Technologies Inc.
1533 Gehman Road
Harleysville, PA 19438

Toll Free:800-645-6733
Phone: 267-933-6300
Fax: 267-933-6305
Email: [email protected]
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Male NPT both ends

Hex Long Nipple GNL
Unit of Measure
1 2 3 

Item #

Body Material

Connection Size

Connection Type

Hex (H)

Length (L)

GNL-2N-1.5-B N/A Brass N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 1 1/2 in
GNL-2N-2-B N/A Brass N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 2 in
GNL-2N-2.5-B N/A Brass N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 2 1/2 in
GNL-2N-3.0-B N/A Brass N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 3 in
GNL-4N1.5-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 1 1/2 in
GNL-4N-2.0-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 2 in
GNL-4N-2.5-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 2 1/2 in
GNL-4N3.0-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 3 in
GNL-4N-4.0-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 4 in
GNL-4N-6.0-B N/A Brass N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 6 in
GNL-6N-2.0-B N/A Brass N/A 3/8 in N/A Male NPT N/A 11/16 in17.4 mm N/A 2 in
GNL-6N-3.0-B N/A Brass N/A 3/8 in N/A Male NPT N/A 11/16 in17.4 mm N/A 3 in
GNL-8N-2.0-B N/A Brass N/A 1/2 in N/A Male NPT N/A 7/8 in22.2 mm N/A 2 in
GNL-8N-3.0-B N/A Brass N/A 1/2 in N/A Male NPT N/A 7/8 in22.2 mm N/A 3 in
GNL-8N-4.0-B N/A Brass N/A 1/2 in N/A Male NPT N/A 7/8 in22.2 mm N/A 4 in
GNL-8N-6.0-B N/A Brass N/A 1/2 in N/A Male NPT N/A 7/8 in22.2 mm N/A 6 in
GNL-12N-3.0-B N/A Brass N/A 3/4 in N/A Male NPT N/A 1 1/16 in26.9 mm N/A 3 in
GNL-16N-3.0-B N/A Brass N/A 1 in N/A Male NPT N/A 1 3/8 in34.9 mm N/A 3 in
GNL-2N-1.5--C N/A Carbon Steel N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 1 1/2 in
GNL-2N-2-C N/A Carbon Steel N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 2 in
GNL-2N-2.5-C N/A Carbon Steel N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 2 1/2 in
GNL-2N-3.0-C N/A Carbon Steel N/A 1/8 in N/A Male NPT N/A 7/16 in11.1 mm N/A 3 in
GNL-4N1.5-C N/A Carbon Steel N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 1 1/2 in
GNL-4N-2.0-C N/A Carbon Steel N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 2 in
GNL-4N-2.5-C N/A Carbon Steel N/A 1/4 in N/A Male NPT N/A 9/16 in14.2 mm N/A 2 1/2 in
Unit of Measure
1 2 3