Which valves can the MY-V series be mounted on?

Gate and globe valves are the primary applications, and the gearbox can also be fitted to butterfly, plug and other valves. The valve-side mounting flange follows ISO 5210, and the stem bore and mounting dimensions comply with international standards, so the gearbox assembles directly onto the valve.

What is a multi-turn bevel valve gearbox?

A manual bevel valve gearbox is a hand-operated gear operator that uses a spiral bevel gear pair to drive a trapezoidal-thread stem nut, which moves the valve stem up and down to convert horizontal handwheel rotation into vertical multi-turn stem travel. The thrust ball bearing carries the axial loads from the valve stem, giving smooth operation, high output torque, low noise and high efficiency.

How do I select the right MY-V model?

Select the model whose rated output torque meets the valve's required torque with an adequate safety factor, then confirm the ISO 5210 flange size (F10–F40), valve stem diameter and required ratio. See our selection guide for a step-by-step method.

Can the MY-V gearbox be used outdoors or in submerged conditions?

Standard protection is IP67. For special environments such as flooding-prone or buried installations, IP68 and immersion protection are available on request.

MY-V Bevel Valve Gearbox, 216–7,250 Nm

Name: MY-V Series Manual Multi-turn Bevel Valve Gearbox
Brand: YOYAGE

Manual

Product Overview

MY-V Bevel Gear Operator

The MY-V series is YOYAGE's base manual multi-turn bevel valve gearbox — a bevel gear operator mounted directly on gate and globe valves, where the spiral bevel gear pair drives a trapezoidal-thread stem nut that moves the valve stem up and down, converting handwheel rotation into vertical stem travel with smooth running, high output torque, low noise and high efficiency. Adding a spur gear stage creates the MY-V-1S for higher torque and ratio, while replacing the handwheel input with an actuator flange creates the MY-V-D and MY-V-SD for electric operation. Ten models cover 216–7,250 Nm, with single-stage, two-stage and input-flange variants available. The precise-cast housing comes in multiple materials, and fully sealed joints keep water out and grease in. ISO 5210 mounting flange; IP67 as standard, IP68 optional for special environments. Manufactured in compliance with CE and ISO 9001 standards.

Standard Type: Multi-turn
Gear Type: Bevel Gear
Ratio: 2.3:1–7.1:1
Torque: 216–7,250 Nm
Protection: IP67 (IP68 optional)
Housing Material: Ductile Iron, WCB (common)

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Product Features

Spiral bevel gear pair for smooth and efficient power transmission
Heat-treated bevel gears with high hardness and wear resistance
C3/C5 coating system for surface protection
Reliable bearing support for stable operation
Grease-filled lubrication for extended service life
NBR seals for enhanced sealing performance
Rigorous torque and low-temperature testing

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Custom Solutions

Housing materials: Ductile iron, WCB, CF8/CF8M, LCC, LCB, LC1
Gear ratio customization on request
Handwheel & chainwheel size customization
Valve stem drive nut customization
MSS flange standard or custom connections
Handwheel locking device
Low-temperature service down to -59°C
C5 coating system
IP68 protection option

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Technical Parameters & Dimensions

Read our selection guide: How to Choose a Valve Gearbox for Industrial Valve Applications

(Tip: Hold Shift and scroll the mouse wheel to scroll the table horizontallyPinch to zoom the table, double-tap to reset)

Dimension Drawing D · D0 · N-H-DP · D1×h · Φd · H1 · H2 · H3 · L · L2 · ΦPD · b · L1 · M

YOYAGE MY-V manual bevel valve gearbox dimension drawing with ISO 5210 mounting flange details

Technical Parameters & Connection Size

Model	Ratio	Max TorqueN·m	Max Torquekgf·m	Max Stem Dia.Φd	Weightkg	FlangeISO 5210	Flange Dia.D	Bolt Circle Dia.PCD D0	Bolt SpecN-H-DP	ConvexD1×h
MY-VS10	2.3:1	216	22	20	10	F10	125	102	4-M10-15	70×3
MY-VS20	2.35:1	363	37	25	12	F12	150	125	4-M12-18	85×3
MY-V0	3.1:1	589	60	35	21.5	F14	175	140	4-M16-24	100×4
MY-V1	3.6:1	932	95	40	28	F16	210	165	4-M20-30	130×4
MY-V2	4:1	1,491	152	52	35	(F20)	250	205	8-M16-24	140×5
MY-V3	4.1:1	2,296	234	60	50	F25	300	254	8-M16-24	200×5
MY-V35	5:1	3,404	347	70	95.5	F30	350	298	8-M20-30	230×5
MY-V4	6:1	4,000	408	90	160	F35	415	356	8-M30-45	260×5
MY-V5	6.3:1	4,500	459	100	190	F35	415	356	8-M30-45	260×5
MY-V6	7.1:1	7,250	740	120	288	F40	475	406	8-M36-54	300×8

Appearance Size (mm)

Model	H1	H2	H3	L	L2	ΦPD	bKey	L1	MHandwheel
MY-VS10	38	65	110	120	215	28	8×7	40	300
MY-VS20	46	70	125	135	230	28	8×7	40	300
MY-V0	55	70	128	160	260	28	8×7	40	300
MY-V1	62	75	145	180	320	28	8×7	40	400
MY-V2	75	90	160	200	340	32	10×8	50	460
MY-V3	85	100	170	225	365	32	10×8	50	460
MY-V35	105	140	225	280	420	32	10×8	50	520
MY-V4	145	160	280	353	445	38	10×8	50	600
MY-V5	145	155	280	355	515	38	10×8	50	600
MY-V6	165	210	335	365	565	50	2-16×10	55	800

Need MY-V Series Selection Support?

Send your valve type, size, and torque requirements to the YOYAGE team for model selection and quotation.

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MY-V Series Manual Multi-turn Bevel Valve Gearbox