FPV

Wafer Slurry Knife Gate Valve

The Wafer Slurry Knife Gate valve has been designed as a space-saving option for slurry applications. The full port design allows the gate to be fully isolated by the sleeve in the open position. When the valve is closed the gate pushes between the sleeves ensuring 100% Bidirectional bubble-tight seal and zero downstream leakage.

Premium materials are supplied standard on all valves.

Product features

Specifications

Size range:	2″ – 24″ (50mm – 600mm)
Valve type:	Slurry knife gate
Body style	Narrow body (wafer)
Temperature range:	176°F (80°C)
Pressure rating:	Up to 240 psi (16 bar)
Body material:	Cast ductile iron, 2 coat epoxy painted or Stainless steel
Gate material:	17-4PH Stainless Steel, 316L Stainless Steel, 2205 Duplex Stainless Steel, 2507 Duplex Stainless Steel, C276 HASTELLOY
Gate/blade:	Coated with Fluoro-carbon coating
Sleeve Material:	Gum rubber, high-temp EPDM, Neoprene, Nitrile, Chlorobutyl
Duty:	Abrasive applications
Hydro-static test:	1.5 Times the rated pressure

Features

Bellows and Stem cover for protection.
Face to Face – MSS SP81.
Fluoro-Carbon coated gate to reduce friction and add wear life to seats.
Full Port, Bi-Directional design at 16 Bar (240Psi).
High strength stainless steel blade.
Lightweight design for easy handling.
Long-lasting lubrication.
Long-wearing replaceable sleeves.
Low maintenance requirements.
Lubrication ports.
Manual lockout option available.
Manual or Automated actuators are available.
Metric & Imperial flange drilling.
No pressure drop across the valve.
No seat cavity where solids can collect and prevent full gate closure.
Stuffing box with gland follower.
The open body prevents gate damage during actuation.
Two coat Epoxy paint.
Two-piece wafer body.
Universal tower frame.
Zinc coated hardware.

HOW THE RUBBER SLEEVE WORKS

Matching rubber ring sleeves with stiffener rings are placed in the valve housing to seal against the gate when the valve is closed and seal against each other when the valve is open. This tight seal contains the high internal line pressure. The double-seated design provides bi-directional flow and shut-off.

Applications

The valve is suited for mining and mineral processing, power generation, sand/gravel, chemical & soda ash, pulp & paper, environmental & effluent, dry feeds and powders.

Actuators

All types of actuators can be fitted; electric, gearbox, hydraulic, pneumatic and handwheel. (Choice of an operator is based on valve size & pressure.)

Accessories

Limit switches
PTFE blade coating
Various blade materials
Gate safety guards
Deflector cone
Splash guard

Dimensions and Weights

Dimensions and weights are for guidance only – detailed dimension drawings are available on request.
All dimensions are in millimetres, unless otherwise stated.

Valve Diaphragm

Valve Size	A	B*	C	D	E	F	G	H	J	K	M	N	P	R	MH kg	BG kg	AC kg	HC kg
50	175	57	101	486	563	540	559	47	50	190	133	384	300	300	19	19	27	23
80	203	62	124	567	611	627	640	71	76	222	162	400	300	300	24	24	37	30
100	243	62	119	621	639	667	692	96	101	266	175	422	500	500	33	33	41	38
150	279	68	146	748	838	803	825	147	152	320	231	449	500	500	39	39	64	42
200	342	81	178	887	924	939	962	196	203	374	261	476	500	500	63	63	84	64
250	416	82	209	1043	1125	1115	1137	247	254	444	339	606	500	500	87	87	145	100
300	482	88	247	–	1207	1273	1289	297	304	517	341	738	600	600	166	166	220	141
350	533	88	273	–	1340	1369	1372	329	336	572	374	765	600	600	195	195	292	168
400	603	101	301	–	1435	1500	1503	381	387	621	374	790	600	600	234	234	328	238
450	647	103	308	–	1680	1728	1737	431	438	668	431	768	700	700	253	253	374	283
500	711	130	368	–	1823	1878	1882	483	489	712	479	790	700	700	325	325	519	335
600	838	131	419	–	2162	2216	2235	589	595	889	479	878	700	700	468	468	719	513

FPV