| Patents for F16K 35 - Means to prevent accidental or unauthorised actuation (4,027) |
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| 12/20/1989 | EP0347289A1 Locking device for valves |
| 12/20/1989 | CN2049722U Pressure controlled self-lock type valve |
| 12/07/1989 | DE3818678A1 Valve, particularly for a sprinkler system |
| 12/06/1989 | EP0345198A1 Anti-theft valve for fuel feed pipe |
| 11/29/1989 | CN2048548U Built-in open-and-closing system of butterfly valve |
| 11/21/1989 | US4881388 Lock for a brake valve |
| 11/07/1989 | US4878515 Water access preventer |
| 10/11/1989 | EP0335997A1 Valve insert |
| 10/10/1989 | US4872327 Locking device for a valve |
| 10/03/1989 | US4871144 Regulator key |
| 09/20/1989 | CN2044676U Blade-lock turncock |
| 09/14/1989 | DE3807099A1 Hand-operated control valve |
| 09/14/1989 | DE3804474A1 Probe entry lock |
| 08/16/1989 | CN2042920U Domestic gas safety valve with automatic closing |
| 08/09/1989 | CN2042541U Double functional water tap |
| 07/26/1989 | CN2041756U Valve with lock |
| 07/26/1989 | CN2041753U Selt-stop water-saving valve for stopping water |
| 07/19/1989 | CN2041380U Cock with lock |
| 07/18/1989 | US4848724 Ball valve with handle locking mechanism |
| 07/04/1989 | US4844412 Spool detent device for manually operated directional control valve |
| 07/04/1989 | US4843846 Locking device for a valve |
| 06/28/1989 | EP0321500A1 Stop valve for fluids. |
| 06/14/1989 | CN2039373U Leakage self-locking device for gas |
| 06/07/1989 | CN2038982U Lock-control ball valve |
| 05/10/1989 | CN2037415U Hand-operated butterfly valve |
| 05/09/1989 | US4827982 Detent mechanism for pressure control valve |
| 05/03/1989 | CN2037015U Automatic closing gas check |
| 05/02/1989 | US4825898 Tamper prevention device for fire hydrants |
| 04/12/1989 | EP0311595A1 Control handle for a sanitary valve |
| 04/12/1989 | CN2035834U Lock-core-lifting valve lock |
| 03/23/1989 | DE3730684A1 Safety device for the water inlet in household appliances |
| 03/07/1989 | US4809948 Butterfly valve assembly and method of making same |
| 03/01/1989 | CN2033460U Safty water tap |
| 01/31/1989 | CA1249561A1 Butterfly valve assembly and method of making same |
| 01/11/1989 | CN2030684U Locking water tap |
| 01/10/1989 | US4796657 Zone selector and locking mechanism for sequencing valve |
| 11/01/1988 | US4781211 Lock for a valve |
| 11/01/1988 | US4781044 Security lock for valves |
| 10/25/1988 | US4779433 Device for locking parking brake release valve |
| 10/20/1988 | DE3727883A1 Lock for shut-off valves of pipe conduits |
| 10/20/1988 | DE3710981A1 Hand lever |
| 10/19/1988 | CN88203585U 带锁水龙头 Lockable faucet |
| 10/18/1988 | US4777981 Magnetic detent joy stick and stack remote control valves |
| 10/18/1988 | US4777811 Clamshell security device |
| 10/05/1988 | EP0284940A1 Hand operated lever |
| 09/15/1988 | DE3717378A1 Apparatus for draining a tank, apparatus for the alternate actuation of two taps and the use thereof |
| 09/13/1988 | US4770388 Latched valve handle |
| 09/13/1988 | US4770202 Valves providing transfer ports |
| 09/13/1988 | CA1241892A1 Operating wrench for tamperproof hydrants |
| 09/07/1988 | CN88203650U Balancing valve and its special intelligent instrument |
| 08/16/1988 | US4763690 Leak-proof valve for gas cylinders |
| 08/10/1988 | CN87210768U Pin-type safe water tap |
| 08/02/1988 | US4760865 Container valve |
| 07/05/1988 | CA1238889A1 Spring-locking handle mechanism |
| 06/08/1988 | CN87214221U Valve safe from thiefs |
| 06/07/1988 | US4748896 For regulating the flow of a pressure fluid |
| 06/01/1988 | DE3639306A1 Lockable top part for valves |
| 05/31/1988 | US4747427 Reversible angle cock |
| 04/26/1988 | US4739967 Mechanical detent |
| 04/21/1988 | WO1988002832A1 Safety cap for valve on high-pressure cylinder |
| 04/12/1988 | US4736765 Hydrant securing device |
| 04/05/1988 | US4735533 Valve locking assembly |
| 03/23/1988 | CN87106407A Shut-off valve for fluids |
| 03/16/1988 | CN86102514A Household gas main switch locking device |
| 03/10/1988 | WO1988001704A1 Stop valve for fluids |
| 02/23/1988 | US4726202 Fluid line lock assembly |
| 02/11/1988 | DE3723970A1 Schaltventil Switching valve |
| 02/09/1988 | US4723569 Lock mechanisms |
| 01/26/1988 | CA1231926A1 Valve with presetting of the amount of throughflow |
| 01/05/1988 | US4717120 Discharge valve for bulk containers |
| 01/05/1988 | US4716922 Magnetic fire hydrant guard |
| 01/05/1988 | US4716747 Top locking plug valve |
| 12/22/1987 | US4714235 Constant displacement dual position cam stop assembly |
| 12/08/1987 | CA1230030A1 Operating wrench for tamperproof hydrants |
| 12/02/1987 | EP0247498A1 Mechanical detent |
| 12/01/1987 | US4709720 Automatically locking valve |
| 11/04/1987 | CN87203146U Safety air valve with self-locking mechanism |
| 11/04/1987 | CN87103657A Self-locking magnetic valve |
| 11/03/1987 | CA1228781A1 Tamperproof fire hydrants |
| 10/13/1987 | US4699168 Theft-resistant valve |
| 10/06/1987 | US4697528 Railway tank car with protective device for protrusion |
| 09/30/1987 | EP0238531A1 Container valve |
| 09/23/1987 | CN86207564U Key-controlled clutch device for valve |
| 09/08/1987 | US4691895 Faucet handle arrangement |
| 09/08/1987 | US4691733 Undercover valve cover assembly and valve support |
| 09/01/1987 | US4690019 Operating wrench for tamperproof hydrants |
| 08/25/1987 | US4688594 Butterfly valve assembly and method of making same |
| 08/19/1987 | EP0232454A1 Actuating device for a thermostatically regulated mixing valve |
| 07/29/1987 | EP0230117A2 Lock mechanisms |
| 07/21/1987 | US4681134 For the outlet valve of a tank truck |
| 07/08/1987 | CN86206706U Valve with locking device |
| 07/07/1987 | US4678003 Safety cap for valve on high-pressure cylinder |
| 07/07/1987 | CA1223849A1 Valve, particularly a thermostatic valve for hot water radiators |
| 06/17/1987 | CN86200953U Key-operated cock |
| 06/16/1987 | EP0225330A1 A calibrated handknob assembly |
| 05/27/1987 | EP0223360A1 Vapour valve and fuel dispensing system incorporating a vapour valve |
| 05/26/1987 | CA1222240A1 Actuator means for double-block and vent valve |
| 05/05/1987 | US4662196 Lock for an oil field valve |
| 03/26/1987 | WO1987001785A1 Container valve |
| 03/26/1987 | DE3533461A1 Rotary knob |