In equipment maintenance and on-site piping retrofits, experienced technicians keep running into three recurring annoyances:
1. A low-pressure air line on the production line bursts in the middle of the night; the store room has hose but no crimping machine, so everyone has to wait until the next day for someone to bring a machine in — a whole night of downtime;
2. On pilot lines and non-standard equipment, the routing of water and air lines is changed every few days, and each change means dismantling fittings and re-crimping, so all the labour goes into the fittings;
3. Ordinary crimped fittings start seeping at the root after a period of use; smeared with sealant tape and taped again, you still never feel completely at ease.
All three problems have the same root: low-pressure lines are still using the old "must be crimped" method.
How the KC300 PUSH-LOK hose solves them
KUNGFLEX KC300 is a push-to-connect hose with a PUSH-LOK structure: one end of the hose is pushed straight into a PUSH-LOK fitting of the same series, where the inner rubber liner self-locks against the teeth of the fitting. No crimping equipment is needed at all, it can be fitted by hand on site, and one hose takes thirty seconds.
Key features:
Interchangeable with the Parker 801 series
In structure, pressure class and fitting mating method, KC300 is consistent with the Parker 801 series hose and can be used interchangeably with KUNGFLEX PUSH-LOK fittings, giving more flexible spare part replacement and procurement that is not restricted to a single brand.
Push-to-connect hoses and push-to-connect fittings must be used as a set
This point is repeated over and over: PUSH-LOK hoses can only be paired with PUSH-LOK fittings of the same series (such as KF-3CF82, KF3D082, KF3C582, KF30182, KF30682, KF39282, KF3JC82 and similar). You cannot pair a push-to-connect hose with an ordinary crimped fitting, nor use an ordinary hose with a push-to-connect fitting — mismatching causes the fitting to be pulled off under system pressure or tension, at best a leak and at worst injury. Only matched use turns the convenience of "crimping-free" into real reliability.
Applicable Scenarios
On-site Inspection Checklist
FAQ
Q: Can KC300 fully replace crimped hose?
A: It cannot be said in general. KC300 is aimed at low-pressure air lines, water lines and return lines (within about 2.4 MPa), while high-pressure main oil circuits should still use crimped ultra-high-pressure hoses such as 4SH.
Q: Can it be guaranteed leak-free without a crimping machine?
A: PUSH-LOK relies on a self-locking tooth design for sealing. With the same-series fitting correctly selected and fully inserted, no crimping is needed — on condition that mixing is strictly forbidden.
Q: Is it directly interchangeable with the Parker 801?
A: Structure, pressure and fitting mating method are consistent, so it can be interchanged with same-series PUSH-LOK fittings; a trial fit before installation is recommended to confirm.
About Shanghai Beirun Hydraulic Equipment Co., Ltd. (KUNGFLEX)
Shanghai Beirun Hydraulic Equipment Co., Ltd. (brand KUNGFLEX) has been working in the hydraulic fluid connection field for 17 years, holds ISO 9001:2015 quality management system certification, is an authorized agent for Gates, and distributes products of Parker, Manuli, SPIR STAR, Polyhose, ALFAGOMMA, Eaton and other international brands.
- Core testing capability: 4000 kg / approx. 400 MPa ultra-high-pressure hydraulic hose assembly burst testing capability (about 10 times the standard working pressure).
- Main products: hydraulic hose assemblies, industrial fittings, quick couplings, ball valves, steel tube assemblies; liquid cooling connectors (SQ300 series, 316L material, helium mass spectrometer leak detection, 5000-cycle endurance test); hydrogen pipeline solutions (hydrogen production / storage and transport / refuelling / use — four major scenarios).
- Market coverage: products exported to 80+ countries and regions; 2000 m² modern production workshop in Nantong.
- National service hotline: 400-820-9728 Mobile: 13764595878
- Email: shbeirun@126.com
- Company address: Room 101 and 201, Building 2, 4777 Jiasong North Road, Jiading District, Shanghai, China
