SVF LZS Series Plastic Tube Variable-Area Flow Meter – AS/ABS Cone Tube

The SVF LZS series plastic tube variable-area flow meters have conical tubes primarily made of AS (Acrylonitrile Styrene) and ABS (Acrylonitrile Butadiene Styrene) plastics, which offer excellent corrosion resistance. They are characterized by a rational structure, compact size, light weight, non-toxicity, odorlessness, resistance to breaking of the conical tube, and convenience of use. These flowmeters are mainly utilized in the chemical, light industry, pharmaceutical, food, and environmental protection sectors for measuring the flow rate of single-phase non-pulsating liquid flows.

Parts conventional material:

Parts material: cone tube: AS
Receiver (flange) nut, upper and lower stops, float: ABS

Specifications
Working Principle
Structure
Video

Specification

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Table 1: SVF LZS Socket/Thread Type Plastic Flow Meter Specification
Model	Nominal Diameter DN (mm)	Measurement Range		Accuracy (±%)	Allowed Measured Medium Condition		Applicable Pipe
Model	Nominal Diameter DN (mm)	Long Tube Type (L)	Short Tube Type (D)	Accuracy (±%)	Temperature (°C)	Pressure (MPa)	Socket	Thread
SVF LZS-15	15	5–50 L/h, 6–60 L/h, 10–100 L/h, 16–160 L/h, 25–250 L/h, 40–400 L/h, 60–600 L/h, 80–800 L/h, 100–1000 L/h	5–50 L/h, 10–100 L/h, 16–160 L/h, 25–250 L/h, 40–400 L/h, 50–500 L/h, 60–600 L/h, 100–1000 L/h	±4	0–60 °C	≤0.6	20	ZG 1/2", NPT 1/2"
SVF LZS-20	20	100–1000 L/h, 160–1600 L/h, 250–2500//h, 300–3000 L/h	100–1000 L/h, 160–1600 L/h, 250–2500/h, 300–3000 L/h				25	ZG 3/4", NPT 3/4"
SVF LZS-25	25	100–1000 L/h, 160–1600 L/h, 250–2500 L/h, 300–3000 L/h	100–1000 L/h, 160–1600 L/h, 250–2500 L/h, 300–3000 L/h				32	ZG 3/4", NPT 3/4"
SVF LZS-32	32	-	0.4–4 m³/h, 0.6–6 m³/h				40	ZG 1", NPT 1"
SVF LZS-40	40	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h				50	ZG 1-1/2", G 2", NPT 2"
SVF LZS-50	50	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h				63	ZG 1-1/2", G 2", NPT 2"
SVF LZS-65	65	-	4–16 m³/h, 5–25 m³/h, 8–40 m³/h, 12–60 m³/h				75	ZG 2", G 2-1/2", NPT 2-1/2"

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Table 2: SVF LZS Flange Type Plastic Flow Meter Specification
Model	Nominal Diameter DN (mm)	Measurement Range	Accuracy (±%)	Allowed Measured Medium Condition
Model	Nominal Diameter DN (mm)	Measurement Range	Accuracy (±%)	Temperature (°C)	Pressure (MPa)
SVF LZS-15	15	5–50 l/h, 10–100 l/h, 16–160 l/h, 25–250 l/h, 40–400 l/h, 50–500 l/h, 60–600 l/h, 100–1000 l/h	4	0–60 °C	≤0.6
SVF LZS-20	20	100–1000 l/h, 160–1600 l/h, 250–2500 l/h, 300–3000 l/h
SVF LZS-25	25	100–1000 l/h, 160–1600 l/h, 250–2500 l/h, 300–3000 l/h
SVF LZS-32	32	0.4–4 m³/h, 0.6–6 m³/h
SVF LZS-40	40	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h
SVF LZS-50	50	0.4–4 m³/h, 0.6–6 m³/h, 1–10 m³/h, 1.6–16 m³/h
SVF LZS-65	65	4–16 m³/h, 5–25 m³/h, 8–40 m³/h, 12–60 m³/h
SVF LZS-80	80	4–16 m³/h, 5–25 m³/h, 8–40 m³/h, 12–60 m³/h
SVF LZS-100	100	14–90 m³/h, 20–120 m³/h, 25–150 m³/h, 20–180 m³/h, 25–200 m³/h
SVF LZS-125	125	14–90 m³/h, 20–120 m³/h, 25–150 m³/h, 20–180 m³/h, 25–200 m³/h
SVF LZS-150	150	14–90 m³/h, 20–120 m³/h, 25–150 m³/h, 20–180 m³/h, 25–200 m³/h
SVF LZS-200	200	20–200 m³/h, 25–250 m³/h, 30–300 m³/h, 35–350 m³/h, 40–400 m³/h
SVF LZS-250	250	20–200 m³/h, 25–250 m³/h, 30–300 m³/h, 35–350 m³/h, 40–400 m³/h
SVF LZS-300	300	20–200 m³/h, 25–250 m³/h, 30–300 m³/h, 35–350 m³/h, 40–400 m³/h

Drawing and dimensions

A dimension drawing of SVF LZS series plastic tube variable-area flow meter.

Table 3: SVF LZS Socket/Thread Type Plastic Flow Meter Dimensions
Model	Dimensions (mm)
	Long Tube Type				Short Tube Type
	L	D1	D2	D3	L	D1	D2	D3
SF LZS-15	280	20	26	45	200	20	26	45
SF LZS-20	380	25	39	68	226	25	39	60
SF LZS-25	380	32	39	68	226	32	39	60
SF LZS-32	-	-	-	-	288	40	49.5	74
SF LZS-40	430	50	73	98	341	50	73	98
SF LZS-50	430	63	73	98	341	63	73	98
SF LZS-65	-	-	-	-	430	75	88	122

Table 4: SVF LZS Flange Type Plastic Flow Meter Dimensions
Model	Dimensions (mm)
Model	L (short)	L (long)	D1	D2
SVF LZS-15	250	330	14	65
SVF LZS-20	290	445	14	75
SVF LZS-25	290	445	14	85
SVF LZS-32	355	–	18	100
SVF LZS-40	415	505	18	110
SVF LZS-50	428	518	18	125
SVF LZS-65	525	–	18	145
SVF LZS-80	530	–	18	160
SVF LZS-100	550	–	18	180
SVF LZS-125	550	–	18	210
SVF LZS-150	550	–	18	240
SVF LZS-200	830	–	23	295
SVF LZS-250	830	–	26	355
SVF LZS-300	830	–	26	410