Water Treatment ComponentsBulkheadContact Us to PurchaseFeatures Push-fit technology, easy to disassembly and assembly. Withstanding pressure and prevention of leakage design. Suitable using in RO drinking system, purifier, water treatment system...etc. Specification Model Type Spec Remark QC-0078 bulkhead 1/4 OD x 1/4 OD John Guest (NCPP1208W) QC-0024 bulkhead 1/2 OD x 1/2 OD John Guest (PP1216W) QC-0025 bulkhead 3/8 OD x 3/8 OD John Guest (NCPP1212W) QC-0022 bulkhead 3/8 OD x 3/8 OD DM (ABU0606W) QC-0023 bulkhead 1/4 OD x 1/4 OD DM (ABU0404-W) QC-0114 bulkhead 1/4 OD x 1/4 OD Made in Taiwan QC-0115 bulkhead 3/8 OD x 3/8 OD Made in Taiwan ApplicationPrevents leaking. Match tubing to same diameter pipe fittings.